yup. chimps show altruism an understanding that helping one another is 'good'.
Chimpanzees Recruit the Best Collaborators -- Melis et al. 311 (5765): 1297 -- Science
Altruistic Helping in Human Infants and Young Chimpanzees -- Warneken and Tomasello 311 (5765): 1301 -- Science
They have been observed to care for sick or injured members of their groups.
They have at least as good a grasp of 'good' and 'bad' behavior as humans.
yes, chimps mourn the dead... mothers have been known to refuse to leave dead infants, grown daughters and sons have refused to leave their dead mothers. Chimps have stopped eating and wasted away due to the loss of a close friend or relative. This have been observed several times in both the wild and captivity.
Not only chimps but Elephants show this clearly. Elephants have been observed trying to prevent the death of an elderly member of the herd by trying to keep her on her feet. They took turns holding her up until she passed away and then they stayed with the body preventing predators from touching it until lack of food and water drove them to move on. When they returned they always stopped where the body had been and if there were any bones left they every member of the herd touched them.
Elephants have been known to carry the bones of dead relatives with them, sometimes for up to a year or more.
Chimps can make up to 57 different types of tools out of natural materials... they can imagine the tool in the stick, rock or branch and make the tool from it.
these things are not unique or exclusive to humans.
wa:do