One mutt we had could identify different ball toys he had by our voice.
If I said, “Go get your football!”, he’d go get the fooball!
or “Go get the tennis ball!” he’d get that.
He astounded my father-in-law one day when he was visiting when my wife said, “Go get your leash!” to go for a walk, FIL said, “That dog ain’t gonna get no leash!”, AND AS SOON AS HE SAID THAT THE DOG COMES TROTTING DOWN THE HALL WITH HIS LEASH IN HIS MOUTH!...................
She busted out of her crate one day when I was at work, and went around the house collecting her leash, my mud boots, my hiking shoes, my indoor shoes, 3 dog toys, and my jacket. Stashed them all in her crate, and when I got home she was sitting proudly at the door of her crate.
Obviously she wanted to go for a walk. So we did.