In general, animal species communicate with other species by body language and a general language that we can understand just as much as they can: an example could be if an animal growls it is about...
they can communicate with the same animals they are. some can communicate with others.
generaly with gestures, sound, and scent
Tigers are nice to it's parents,cubs and boyfriends/girlfriends. Then on the other hand they kill other animals for it's food.
they eat them