There has been quite a bit of research published in late years on culture (socially inheritable changes in practice) in apes and even among some species of monkeys.
The search for a "simple" (one phrase or one sentence) description of the difference between animals and humans continues to be frustrated. Carrol ^^^^^^ CB; Imitation can get some few practices across the death barrier. None of the named studies has amounted to showing apes or monkeys inventing and using symbolling and language. There's still a trenchent qualitative difference of symbolling, language and culture,tradition between all these primate societies and _all_ human societies. You also have a lot of human contact with all the primate societies so studied. The primates can imitate "culture" some. Anthropology's narrowing down the difference between human animals and other animals to culture is still valid.
