Pigs are gentle creatures with surprising intelligence.

Guinea pigs are gentle, curious pets.

Shy creatures who reside in extensive burrows, groundhogs keep to themselves and might go unnoticed in your own backyard.

Cows are social, complex animals.

Bulls are strong, muscular, mature male cows.

Chickens are intelligent birds with a complex social hierarchy.

Ferrets are playful, curious carnivores who have become popular pets.

Depending on pack ice for their habitat, polar bears are threatened by climate change—and by traffic in their fur and parts.

These shy, gentle animals share our neighborhoods—and sometimes our homes.