Why a Jack Russell should walk on a harness
A Jack Russell who has just spotted a cat can launch at the end of the lead with surprising force, and on a collar all of that lands on their throat. A harness spreads it across the chest and gives you far better control of a dog that changes direction at full speed, which, for a terrier bred to run with the hounds all day, is most of the time.
Ours is step-in, so there is no wrestling a wriggling terrier through a loop. You lay it flat, they step in, and the neck and chest clip closed. Both adjust, and on this breed that matters: Jacks are famous escape artists, so keep the straps snug and check the fit regularly.
For walking, put the lead on the harness. It clips at the back, so nothing pulls on the neck, and the collar is for their tag and their name. If your Jack has gone quiet in the backyard, that is a separate problem. Check the garden bed.
Want the full story on the little legend? Read A Pupstyler's Guide to the Jack Russell.