Well, you could fuck your ape, but it won't produce a child. We are too genetically different from them. However, the idea that humans may have been able to interbreed with Neanderthals is still being debated. Some people even hypothesize that the gene in some European populations that causes red hair and freckles may have had its origin in interbreeding with Neanderthals. But of course we can never know for sure if human/Neanderthal hybrids were possible since all Neanderthals are dead. But I promise if I ever build a time machine I'll figure it out for you.