Urination problem

by D
(Murfreesboro, TN)

My Jack Russell is about 1 year old. We adopted (rescued) him when he was about 4 1/2 months old. He was neutered at around 6 months. Admittedly, house training has been a long journey, but in recent months he seems to be really figuring it out. But in the last week, he seems to have majorly back-pedalled. He has been jumping up to curl up next to me on the couch, and then he releases his bladder. Then, he approached my husband and laid across his shoes, and he peed.

I'm worried about him. He seems to be perfectly healthy otherwise, though.

Is this a breed specific sort of thing? Does anyone have any advice?