feral

When animal control finds a feral dog, they have to handle it very carefully because the animal is so wild that it's probably afraid of humans and likely to bite.

Feral is often used to describe a wild, untamed animal, like the feral cat with its claws and sharp teeth menacingly bared, ready to strike. Qualities that are similar to a wild animal can also be called feral. The child who grew alone up in a cabin in the woods, and who didn't go to school, was called feral when she ran away from the orphanage.

Definitions of feral
1

adj wild and menacing

“a pack of feral dogs”
Synonyms:
ferine, savage
untamed, wild
in a natural state; not tamed or domesticated or cultivated

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