My 10 yr old (unspayed) female pug is always trying to hump my legs.
She was in heat when we received her and is scheduled to be spayed
mid Sept. I never ran into this with any of my senior girls before.
My vet believes that she was used for breeding.
Other than that, she is the picture of health and I know that
she will be a perfect companion to a lucky family.
Humping is a way for a pug to show dominance. She must think she needs to prove something to you, the poor dear!
I have heard also that some pugs just like the feeling. Dino (R.I.P.) used to hump the large stuffed dog I have in my living room.