Let your dogs brush their own teeth & freshen their own breath80% of dogs face oral health issues by the age of 3, Long-lasting and designed for small and big powerful chewers, Kanine Care Toothbrush is the only 2-in-1 dog dental chew toy that lets dogs take control of their own dental health every day. Comes in two versions, 1) Blue Classic chew and 2) Green extreme chewFor Puppies and Senior dogs, we recommend the Soft Blue Chew (S, M, L)For Strong Healthy dogs, we recommend the Extreme Chew Green (S, M, L)Note: The EXTREME CHEW version is available when you click on the Color/type drop-down box. For puppies, cats, and tiny dogs the classic small is recommended.*For maximum benefits, use all Kanine Care products as part of your dogs daily routine for about 10 minutes a day of chew-time. If your dog is a heavy chewer we recommend the EXTREME CHEW version of our toothbrush designed to withstand powerful jaw.-DOG WEIGHT: 40-190+lbs (18-90KG+)RECOMMENDED SIZE: LARGE or LARGE EXTREME (For Heavy Chewers)-DOG WEIGHT: 10-40lbs (9-18KG)RECOMMENDED SIZE: MEDIUM or MEDIUM EXTREME(For Heavy Chewers)-DOG WEIGHT: 0-10 lbs (9KG)RECOMMENDED SIZE: SMALL or SMALL EXTREME (Teacup dogs, Chihuahuas, and Cats)-FEATURES:Made from Safe, Durable & Non-Toxic Natural RubberToothpaste reservoir to store toothpasteBristle-lined grooves that brush pets teeth down to the gum lineEasy to hold paw padsSide nudges for extra brushing surfaces