Animalistically

[...] “and in general wantonly pursues pleasure in an animal fashion in all of his sexual activities,” or it means, “he pursues pleasure animalistically with women, begetting children, and also animalistically with men, having sex for pleasure only,” [...]

Source: wiktionary

[...] of a dehumanizing bestiality comes in the off-hand aside that types the Kalahari Bushman as an animalistically undisciplined alien [which] speaks for an emotively entrenched scale of prejudice defined around the stigma of subhumanness.

Source: wiktionary

She'd been exhausted and drunk even before the call. Then three hours and a magnum later, out in the cold, her melting brain had animalistically forced her to stay conscious so she wouldn't fall over and die in the snow.

Source: wiktionary