even chimpanzee adopt orphan juvenile of big cats
See if both the partners are immature, they don't have any other option else than to adopt. They do adopt orphans juvenile of big cats. The adoption of unrelated orphaned infants is something chimpanzees and humans have in common. Providing parental care has fitness implications for both the adopter and orphan, and cases of adoption have thus been cited as evidence for a shared origin of an altruistic behaviour.
thankyou.