The collar for
walking your dog.
This is the collar I like to use when I'm walking my dogs. When the dog pulls on the lead the collar will tighten up, but only so far unlike a choke chain.
Rat Terriers have small heads and to get a collar that they can not slip out of is too tight to wear all the time. I leave their regular collars on all the time and slip this one over their heads when I put them on a lead.
This collar is too loose when the dog is not pulling to wear all the time. It would catch on too many things and hurt them.
These collars are sold that Petsmart.