My grandkids are always pretending they are dogs or cats. It’s a kid thing. Nothing to do with autism.Robert had a she[hard dog when he was 3-4 yrs old. He cant possibly remember her can he? It got to the point where Robert was running the fence barking at people. He bonded with the dog and thought it was how he was supposed to act. He would sniff people when they came over and he wasnt talking yet. I decided the best thing was to rehome the dog.