If there is an animal or a bird who is different from the other members in their group, do the rest of the group treat them differently or animals  have more tolerant? In this picture, they seem they are neglecting the one in the middle but no, there are just looking for food.

Something else about animals
 I read once that cats know if they are attractive or if they are pretty, I am not sure about if the fact is true but it is interesting.