They absolutely do! Some animals mate for life. Some mourn when one of their own dies (see whales, elephants). Parrots who are lonely may self-mutilate. Dogs can remember you and get so excited to see you, even after being separated for years. Interspecies friendships exist. It’s like… I don’t see how people can still think animals DON’T have emotions.

They just don’t make faces like humans do. Although interestingly, dogs developed eyebrow muscles that give them more human-like expressions, which therefore strengthens our bond with them.