Parallel or convergent evolution is coincidental to the point I was making, which is that you cannot assume a theory of mind from observations that might be consistent with it; you also have to give due consideration to the other possibilities, such as it being an instinctive behavior evolved for a particular situation.

>Even with squirrels though, as mammals they exhibit many behaviours common to all mammals. Behaviours we exhibit as well. So if all mammals have these behaviours and we do too...

Here you are combining speculation with an argument from the general to the specific. There are some behaviors common to all mammals, but are there any theory-of-mind-like behaviors in that category? No, so the rest of that paragraph and the one following are built on a false premise.

I am no expert, but FWIW, I happen to think that apes, or at least chimpanzees and orangutans, do have a nascent theory of mind, and that it was more developed in the various hominins that are now extinct.