Looking for a bird!

More: The cleverest dog I have ever had. She and my older lab, Reilly will play with chew toys together. This night Reilly would not let her have the toy, so she looked at the toy, jumped up barked, started to run to the door as if someone was there(there wasn't) Reilly jumps up to follow her where upon Remi makes a U-turn to go back and get the toy. Critical thinking!