Worst Creatures (Living, Extinct, or Fictional) to Have as Pets

We all love pets, right? Well, there are many real (extinct animals included) and fictional species that would make great pets. However, we are not here for that. In this list, we're looking up at species (real and imaginary alike) that would make the worst pets.
The Top Ten
Demon

Any demon from myths and pop culture, although they are just imaginary, would make really terrible pets. For one, THEY'RE PURE EVIL! And another, they are said to be extremely dangerous.

Vampire

A terrible idea to keep these as pets, since they would attack and drink anyone's blood, even potentially turn their victims into vampires.

Argentinosaurus Argentinosaurus is a genus of giant titanosaur sauropod dinosaur from the Late Cretaceous period. It is known from fragmentary remains discovered in the Huincul Formation of Neuquén Province in Argentina. The first fossils were found in 1987 by rancher Guillermo Heredia, and the dinosaur was formally... read more

Although I love sauropods, and that they should be brought back (alongside hadrosaurs and ankylosaurians) and be part of the modern ecosystem (alongside our current animals), giant sauropods definitely would make horrible pets due to their literally gigantic sizes. Not only that, but they could step on you if they don't care on who or what they're stepping on!

Tiger The tiger (Panthera tigris) is the largest living cat species and a member of the genus Panthera. It is immediately recognisable by its dark vertical stripes on orange fur and white underside. An apex predator, it primarily hunts ungulates such as deer and wild boar, and is generally solitary and territorial,... read more

Tigers are just too big of cats to keep as pets, and thus are too dangerous for people to keep as pets. If anything, they belong in zoos and in the wild.

Elephant African elephants are elephants of the genus Loxodonta. The genus consists of two extant species: the African bush elephant, Loxodonta africana, and the smaller African forest elephant, Loxodonta cyclotis. They are the largest land animals on Earth and are native to various habitats across Africa.

They are sensitive animals, and are quite too dangerous and big to keep as pets.

Carnotaurus Carnotaurus, meaning "meat-eating bull" in Latin, is a genus of abelisaurid theropod dinosaur that lived in what is now South America about 70 million years ago during the Late Cretaceous period. It is known for its distinctive horns above the eyes and extremely reduced forelimbs. Carnotaurus was one... read more

Carnotaurus, due to being the perfect size for a predatory dinosaur as a hunter of humans (and other similarly-sized animals), this should not be kept as a pet if it was resurrected from extinction. Honestly, it would only exist in zoos if brought back.

Jinn
Saltwater Crocodile The saltwater crocodile, also known as the estuarine crocodile, Indo-Pacific crocodile, marine crocodile, sea crocodile, or informally as saltie, is the largest of all living reptiles. It is also the largest riparian predator in the world. Adult males can exceed 20 feet in length and weigh over 2,200... read more

Although any species of crocodile (other than possibly dwarf crocodiles) makes horrible pets due to their large sizes and their predatory nature, I decided to pick the saltwater crocodile because of how dangerous this reptile is compared with other species of crocodile.

Dragon A dragon is a legendary creature that appears in the myths and folklore of many cultures around the world. Typically depicted with serpentine or reptilian traits, dragons are often associated with strength, wisdom, and magical powers. In Eastern cultures, they are usually seen as benevolent, while in... read more

Don't get me wrong, dragons are cool and all (partially in my opinion due to the How to Train Your Dragon franchise), but I think that dragons would make really bad pets, due to them being very dangerous predators. Not to mention that their fire-breathing abilities (to be fair, not all dragon species would breathe fire, but still) would cause house fires and wildfires.

Troll

The Newcomers

? Tick
? Goblin
The Contenders
Elf
Gnome
Polar Bear The polar bear is a carnivorous bear whose native range lies largely within the Arctic Circle, encompassing the Arctic Ocean, its surrounding seas, and surrounding land masses. It is the largest land carnivore and is well adapted to life on sea ice. Polar bears primarily hunt seals and are classified... read more

As the largest living bear species, plus the most carnivorous of bears, polar bears are too big and dangerous to even keep and care for by most people. Yes, I'm aware of Marc Dumas and his beloved polar bear, but in general, polar bears are too large and predatory for normal people to have as pets.

Gremlin
Grizzly Bear The grizzly bear, less commonly called the silvertip bear, is a North American subspecies of the brown bear. It is found in parts of the United States and Canada, particularly Alaska and the Rocky Mountains. Grizzlies are known for their large size and distinctive shoulder hump.
Dilophosaurus Wetherilli

Like the Carnotaurus, this carnivorous dinosaur would be the perfect size range to be a predator of humans (due to being around 20 feet long), and thus, it would be a poor choice as a pet.

Majungasaurus Majungasaurus is a genus of abelisaurid theropod dinosaur that lived in Madagascar from 70 to 66 million years ago, during the Late Cretaceous Period. The genus contains a single species, Majungasaurus crenatissimus. It was a top predator and is known for its short, thick skull and possible cannibalistic... read more
Rajasaurus
Nile Crocodile
Hippopotamus The common hippopotamus, or hippo, is a large, mostly herbivorous mammal native to sub-Saharan Africa. It is one of only two extant species in the family Hippopotamidae, the other being the pygmy hippopotamus. Hippos are known for their massive size, semi-aquatic lifestyle, and territorial behavior... read more
Black Rhinoceros
White Rhinoceros
Columbian Mammoth
Lion The lion (Panthera leo) is a large cat in the genus Panthera, native to sub‑Saharan Africa and a single isolated population in western India. It has a muscular, broad‑chested body, a short rounded head, round ears, and a hairy tuft at the end of its tail. Adult males are larger than females and... read more
Blue Ringed Octopus The Blue Ringed Octopuses (Hapalochlaena) are the four strongly venomous species that are found on the coral reefs and tidal pools in the Pacific and Indian Ocean, particularly from Australia to Japan. It is known as one of the most poisonous and deadliest sea creatures. It can kill a human body by... read more
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