You're looking at a complex network of individual friendships between animals that care deeply for each other.

From a sign-language-speaking gorilla to a dog who adopted dozens of ducklings, discover the bonds within these truly unique friendships that demonstrate animals’ emotional intelligence.

You’re looking at a complex network of individual friendships between animals that care deeply for each other.

Feeding on a blood diet is unusual for a mammal and has led ... You're looking at a complex network of individual friendships ...