That is…about 10 different kinds of disturbing.
I was wondering if Dewey was the dog! 
I’ve seen this with horses. An intact mare was pastured with a gelding. She came into heat, hard, and pestered the gelding something awful - squealing, peeing, bumping his chest with her rump. Unfortunately, it took the gelding a while to figure out what she wanted. By the time he got the message and tried to mount her, she was going out of heat and kicked him in the chest.
CWthree, ahh, so I guess it does hapen…I grew up with horses but not breeding ones, and never witnessed it with them, only with this pair of dogs.
I also had a young, neutured male cat who humped a teddy bear of mine relentlessly (I ended up tossing the bear out…ewwww! I was 13 or so at the time and not amused, :D).
And also dogs, often females, who did this to other dogs…figured the OP’s question had already been answered, so didn’t bring them up.
Captain is just wussy enough to get back-alleyed by a cat.
The very first time Joey figured out what this whole masturbating thing was all about he happened to be at the foot of the bed. At 4 in the morning. And he was loud about it. I woke up to what sounded like a cat who’d been stepped on by a burglar and turned on the light to see him going at it. He had a look on his face like he had just discovered a bottomless food bowl and was screaming at the top of his lungs. I just moved over and let him keep right on with his business and tried not laugh so hard that I’d give myself the hiccups.
I hope you washed the bedspread. 
This is the best thread title I’ve seen in a long, long time. I was cracking up before I even opened the thread.