Animal language comes from their genes, it is equivalent to laughter and crying and body language of humans. You can do a lot with just those, you can cry and point and you properly communicate that you are sad because of a thing etc.

Human then have another level of language above that that we invented, there is no evidence of animals having anything like that. We can teach an animal to understand some words, but then that animal wont teach their kids to do it, it is a one time thing so they aren't anything like human language learning and culture.