ADAPTIL Collar for Small Dogs – Calms & Comforts Dogs - Use These Collars by ADAPTIL for Dogs During Training, Boarding, Loud Noises and Fears Outdoors (Small Dog Calming Collar, 1-Pack) :
Adaptil Adjustable Calming and Comfort Collar for S to M Dogs (2-Packs) | eBay
Adaptil Calming Collar Junior | Buy at Homesalive.ca