Measure around the widest part of your pet's chest for a harness and around the neck for a collar, then add about two fingers of room. Each product page lists its size range in inches.

Toys marked for heavy chewers use thicker rubber or reinforced stitching. No toy is indestructible, so check it regularly and replace it once pieces start to come loose.

Pick a bed a little longer than your pet when stretched out. Bolstered beds suit pets that curl up, flat or orthopedic beds suit older pets and those that sprawl.