Dr. Irene Pepperberg has had meaningful conversations with an African Grey parrot.
It was pretty cool. It gives me hope for a future of being part of a society with other sapient species in it.
But it wouldn't be quite the "whoa, on large enough scales the universe _really is_ the same, everywhere" type feeling that humans having meaningful conversations with, say, Fookin' Prawns would.
For all we know we could be discussing how the transition to Kantian philosophy played out slightly different for them in a few years.