My 18months (ish) bitch has been humped continually in the last 2 weeks by male dogs when out on our walks/ around other dogs.
She's a rescue and was spayed just before we got her.
A couple of dog owners have told me that sometime the operation fails or sometimes a bitch will still give off a smell. There's been no blood or anything else to make me suspect that she was in season.
Should I be concerned? Could the op have failed? I really don't want any puppies.