Top Ten Plant and Animal Species that Would Be Invasive in California

This list is for invasive species (plant and animal) that aren't present in California, but would of would have had a severe impact to California's economy, society, and/or ecology, it can also include some unlikely invasive species that would be invasive too. Have fun posting invasive and possibly invasive species to the list!

The Top Ten

1 Cane Toad

Australia is currently having problems with these large, fat, warty toads. These toads are proven to do well even in the harshest of California's climates, so these toads could become the next invasive species in California. - DinoLover4242

2 Red-Necked Wallaby

Some species of wallabies such as red-necked wallabies are flourishing well even in Great Britain, where there are lots of predators, and they also flourish even if it's cold, but they would also pose a risk to natives there, and they would also do the same in California, overgrazing the lands, outcompeting native rabbits and other small herbivores, and other impact they would have. - DinoLover4242

3 Gray Kangaroo The kangaroo is a marsupial from the family Macropodidae. In common use the term is used to describe the largest species from this family, especially those of the genus Macropus: the red kangaroo, antilopine kangaroo, eastern grey kangaroo, and western grey kangaroo.

Some people planned to introduce kangaroos (gray and/or red kangaroos, but let's just use gray kangaroo as an example), into Colorado, but fortunately, it was just an April fools joke, but what if this happened? The kangaroos would have overgrazed lands, outcompete native deer, and would have almost no predators, less predators than in their native range, which would have allowed these kangaroos to expand their population out of control. The same would be said for California, which is very similar to Australia's lands. - DinoLover4242

Wild kangaroos in California? But that will make California more entertaining.

4 Koala The koala is an arboreal herbivorous marsupial native to Australia. It is the only extant representative of the family Phascolarctidae and its closest living relatives are the wombats.

Even though this is unlikely, this is still possible as California has lots of eucalyptus trees, which would (have) allow these near-endangered marsupials to flourish in California, and another positive thing for koalas in California is that California's climate is similar to Australia's climate, which would make matters worse for eucalyptus tree farmers, as they eat eucalyptus trees, so yes, koalas would thrive in California.

5 Common Brushtail Possum

New Zealand is currently having problems with these invasive marsupials, as they eat the eggs of birds, and they also eat crops. Unfortunately for California, parts of California is similar to New Zealand in climate, not only similar to Australia, so this would allow these marsupials to flourish and become invasive species in California. - DinoLover4242

6 Tasmanian Devil

As some evidence confirms, in their native range, introduced foxes in Tasmania had been killed off by Tasmanian devils due to the fox pups were unprotected against Tasmanian devil attacks. Sadly for Californians, many parts of California is similar to Tasmania, which would allow Tasmanian devils to flourish (if devil face tumors [which are currently threatening native ones in Tasmania] aren't present in invasive ones), they would also kill off native foxes and even coyotes into extinction, they would also kill off some native prey species. - DinoLover4242

SOOO CUTE

7 Red Kangaroo

Some people planned to introduce kangaroos (gray and/or red kangaroos, but let's just use red kangaroo as an example), into Colorado, but fortunately, it was just an April fools joke, but what if this happened? The kangaroos would have overgrazed lands, outcompete native deer, and would have almost no predators, less predators than in their native range, which would have allowed these kangaroos to expand their population out of control. The same would be said for California, which is very similar to Australia's lands. - DinoLover4242

8 Rhesus Macaque

These monkeys flourish well in both dry and wet habitats, they also adapt well into life in the city, but they were also introduced to Florida and South Carolina, where they are proven to be flourishing. If rhesus macaques were introduced to California's ecosystem, they would impact some native birds and small mammals, but they would also spread some harmful diseases as Floida's rhesus macaques shows. - DinoLover4242

9 Vervet Monkey

These monkeys already flourish in nonnative Florida, and they do well in native African ranges, where it can get either wet or dry. Vervet monkeys also adapt well to city life, so these monkeys would have no problem adjusting to city life in California. Unlike rhesus macaques, vervet monkeys in Florida aren't known to spread much harmful diseases, so vervet monkeys would be more tolerate by the people of California, despite vervet monkey's possible ecological impact towards some native species. - DinoLover4242

10 Polynesian Rat

We already have brown and black rats, but these rats in where brown and black rats were brought to, they still flourish and their population is growing due to grains and other food sources that humans let out. The Polynesian rats would also thrive in California if they were brought to California. - DinoLover4242

The Contenders

11 Flying Fox

Flying foxes are already listed on the Lacey Act since people are worried that flying foxes would devastate agricultural crops by eating the crops. If this happened, that would probably be a disaster. They would probably also spread annoying and possibly deadly diseases and/or viruses if they were carrying them before being released into the new ecosystem. Imagine if flying foxes were successfully introduced to California and are flourishing (breeding, finding right food, etc) in Californian wilderness, cities, and suburbs, that horrifying scenario would happen in this state. - DinoLover4242

12 Nine-Banded Armadillo

These armadillos are flourishing well in southeastern United States, where they cause some ecological impact, since these armadillos weren't native to North America. Fortunately for California, there is a range of mountains that blocks the armadillos from coming into California, but it these mountains were removed or if these armadillos were brought into California by some people, the armadillos would have caused some ecological impact towards some native California animals by eating their eggs or preying on them. - DinoLover4242

13 Ring-Tailed Lemur

This species of lemur becoming invasive in California may sound unlikely, but it's possible due to the fact that many (not all, though) zoos, safari parks, and sanctuaries in California have ring-tailed lemurs, and if enough ring-tailed lemurs escaped, they could establish breeding populations in California, where they could probably outcompete native squirrels and other omnivorous tree-dwelling animals to endangerment or extinction. - DinoLover4242

14 Vampire Bat

The common vampire bat is a potential invasive species that, if global warming trends continues in the future, would spread into California, spreading potential deadly diseases on livestock on many people, even if there are few diseased vampire bats. Southern California is the warmest part of California for now and would provide suitable habitats for vampire bats and would spread out if California continues to warm. - DinoLover4242

15 Aye-aye The aye-aye is a lemur, a strepsirrhine primate native to Madagascar that combines rodent-like teeth that perpetually grow and a special thin middle finger.

Aye-ayes are a yet-another unlikely but possible invasive species if let loose in California. If they were brought into California's ecosystem, they could devastate some native insect species and outcompete many native woodpecker species to endangerment and/or extinction. - DinoLover4242

16 Red Ruffed Lemur

This species of lemur becoming invasive in California may sound unlikely, but it's possible due to the fact that many (not all, though) zoos, safari parks, and sanctuaries in California have red ruffed lemurs, and if enough red ruffed lemurs escaped, they could establish breeding populations in California, where they could probably outcompete native squirrels and other omnivorous tree-dwelling animals to endangerment or extinction. - DinoLover4242

17 Black-And-White Ruffed Lemur

This species of lemur becoming invasive in California may sound unlikely, but it's possible due to the fact that many (not all, though) zoos, safari parks, and sanctuaries in California have black-and-white ruffed lemurs, and if enough black-and-white ruffed lemurs escaped, they could establish breeding populations in California, where they could probably outcompete native squirrels and other omnivorous tree-dwelling animals to endangerment or extinction. - DinoLover4242

18 American Alligator

This species of alligator is one of the only native species of crocodilians of mainland North America (along with the near-endangered American crocodiles in South Florida). Despite this, they are only native to southeastern United States, but if they were introduced to California, they would flourish, as in their native range, alligators are known to tolerate cold temperatures and one time, people recorded alligators hibernating underneath a frozen lake with their snouts sticking out to get oxygen while they hibernate. There were also reports of pet alligators that either escaped or were let loose by humans, so it's possible for alligators to survive and flourish in California wilderness, however, alligators would negatively impact some native species, therefore rendering those species either endangered or extinct from California's alligator invasion, unlike in Florida where Burmese pythons devastate some alligator populations, in California, there are no pythons, allowing alligators ...more - DinoLover4242

19 Kudzu

Kudzu are already devastating man-made suburbs in southeastern United States, and regrows after dying, so it's possible for kudzu to flourish in California if they were introduced there by either birds spreading outwards closer to California or if humans brought kudzu and/or their seeds to California gardens or wilderness. There, the kudzu would wreck California neighborhoods too by overgrowing and covering man-made objects such as houses, causing some damages. - DinoLover4242

20 Coquerel's Sifaka

This species of lemur becoming invasive in California may sound unlikely, but it's possible due to the fact that many (not all, though) zoos, safari parks, and sanctuaries in California have Coquerel's sifakas, and if enough Coquerel's sifakas escaped, they could establish breeding populations in California, where they could probably outcompete native squirrels and other omnivorous tree-dwelling animals to endangerment or extinction. - DinoLover4242

21 Indri
22 Fire Ant

These ants are already a concern for many Californians and are likely to be introduced to California as lots of law breakers are out in California, with some possibly wanting to bring fire ants in California despite fire ants being not native to California. There, fire ants would likely kill off lots of small endangered species to extinction, and make some small animals endangered or close to being endangered. - DinoLover4242

23 Asian Giant Hornet

People are already concerned about these large predatory insects, which are native to Southeast Asia, but has since been introduced to Europe, where they are devastating native bees there. If these insects were successfully introduced to California, they would also be a threat to the bees there, but would also be a danger to humans too, as these hornets can deliver very painful stings and sometimes can lead to death, especially if that person is either allergic to hornet stings or the venom of the hornets who stung that person is potent. - DinoLover4242

24 Common Bamboo

This species of bamboo would spread out of control in California's ecosystem if left unchecked, outcompeting some of the native plants of California. These bamboo would have no natural predators other than humans, but if the humans couldn't get rid of these invasive bamboos (if they reproduce fast and frequently, more so than in their native Chinese range), there would be nothing left to do to control these invasive bamboo but to introduce giant panda bears and red pandas, which would have predators like cougars, etc to control panda populations, yet enough pandas to control the spread of bamboo. - DinoLover4242

25 Meerkat The meerkat or suricate is a small carnivoran belonging to the mongoose family. It is the only member of the genus Suricata.

Meerkats would outcompete some/many native populations of different species of ground squirrels, weasels, etc if meerkats were introduced to California. Meerkats would also overrun California and would flourish due to much less predators than in their native South African range, causing population explosion like what happened to European rabbits in nonnative Australia. Some species of endangered scorpions, snakes, and lizards would probably become extinct due to the invasive meerkats in California. - DinoLover4242

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