Do non-human animals have a family structure?

Tribal tendencies in non-human animal groups are tribal tendencies, not family. There is a difference both in humans and in non-human animals.

And yes, non-human animals have family structures, some loosely defined, some rigidly defined, just like different human cultures.

Yes, they do. Some care deeply for and are attached to a mate for a lifetime. Others just mate and move on. Most mother animals are fiercely protective of and care for their young.

Well, what’s a family? Relatives who (in the best case scenario) love and care for each other? In that case, yes. Our limbic systems are really very basic, we should stop pretending they are unique to humans.

Yes, many species live in complex family units, from lion prides to the common Acorn woodpecker here in my neck o’ the woods. Mothers and daughters co-nest, help rear each others young and often mate with units of males that are often brothers and go on dating sprees as a team. lol They defend their granery caches as a family unit as well.