Day of the Animals1977

Horror Vault's take

When Earth's ozone layer begins breaking down, something goes terribly wrong with the wildlife inhabiting high altitudes — and a group of hikers is dropped deep into that danger zone just as authorities scramble to contain the threat. Stranded in the wilderness with no warning and no easy way out, the group must contend with predators from every direction: hawks, wolves, bears, snakes, and worse. This late-70s eco-horror entry leans hard into nature-run-amok paranoia, channeling real-world environmental anxieties into relentless backcountry dread.

Content: Animal Attack Sequences, Peril Involving Wildlife, Violence Against Characters