Many people pretend to talk to their pets, but you can really, truly do it. If you have, you're on your way to becoming a great animal communicator.
Some people think that animal communication has to be vocal.
Any superhero knows that mental telepathy is where it's at. So while barking at fido might be fun, it's not the practice you need. Try thinking like an animal. Only when you get into the mindset of, say, a squirrel, will you be able to truly talk to one. If animals could talk, they would probably have a lot to say to you.