pepsi, 2.5 year old border collie/pittbull mix postmasterMay 20, 2018 Smiling Dogs pepsi, 2.5 year old border collie/pittbull mix ← I’ve submitted her before, but it’s important to share my pretty… Is there a difference between the 1-year and 3-year rabies shot? My dog went to the vet this morning for his annual and he is now of age to receive and be given a tag for the 3-year, but my vet didn’t give me the option. My other dog received a 3-year from our previous vet. →