So all of a sudden everything starting getting knocked off my nightstand during the day. Then once I saw Jinks climb up there to look out the window, so I assumed it was him. But when I had a cold one winter, I was home again and saw that it was Speedy--Jinks was very careful when he had gone up there and didn't knock stuff down. But Speedy just went up like a bulldozer and moved everything off so he'd have room to sit.
His routine is, he sits and looks, and when something piques his interest, he starts to growl. Then as he gets more excited he starts barking, and when something really gets his goat, he stands up and barks really loud and sort of howls. What a hoot.