Is it normal I have conversations with my animals?

Of course it's normal! I have two cats and I talk to them and i swear, they listen. I can have conversations with them and if they are at the door when I get home I can say "go" in a normal voice and my cats walk away. They also respond to the word "food" and I even asked one of my previously owned cats (she ran away) to get me one of her toys and she came back 10 seconds later with the toy in her mouth, then dropped it at my feet. I don't train my cats to respond to conversation, they just... listen.