I use Interceptor also for all my dogs. I have 3 Yorkies under 10lbs, and 1 dachshund now 12lbs, so I buy the under 10lbs. for 3 and over 10lbs for 1. My babies and I really like it. I use to have them on HeartGard Plus for a long time (the older ones), but I guess they decided they didn't want that anymore, so my Vet suggested Interceptor, and it's working out fine.
