why do some animals adopt other animals that are obliviously from different species ?

Question

I always wonder if it is because they dont see the differences are that they genuinely dont care at all

In: Biology

Answer 1

*Zoology definition: behaviour of an animal that benefits another at its own expense.
‘’Reciprocal altruism.’’

I feel most humans pray to win great fortunes and benefits for themselves and do great deeds to make themselves feel wonderful and important. Lesser animals don’t. They have nothing to gain from an apparent altruistic act. They just do it.