When I was a baby, my folks had a cat that would ring the doorbell when it wanted in.
One of our Siamese when I was a kid would steal dogfood, and would grab hold of doorknobs and swing back & forth to open the door to my folks bedroom so he could sleep under the blankets.
The German Shepherd had been picked up & carried for about a mile by a tornado (we got her after this happened). If a storm was anywhere within 50 mi, we knew by how she acted.
Our imposing Black Lab would go nuts when "Lassie" was on, and park himself right in front of the tv. He'd also turn into a big baby when given a squeek toy.