The Strolee bassinet, with its dimensions of 22"L x 12"W x 19"H and a weight capacity of up to 50lbs, can comfortably accommodate a range of small to medium-sized pet breeds. Some suitable breeds include but are not limited to: All cats Shih Tzu Pug French Bulldog Cavalier King Charles Spaniel Boston Terrier Miniature Schnauzer Beagle Smaller Border Collies or Australian Shepherds While many small breeds will fit with ease, medium breeds close to the 50 lbs mark might fit in terms of weight but could find the physical space a bit snug. It's crucial for pet owners to consider both the weight and the physical size of their pet in relation to the bassinet's dimensions to ensure optimal comfort.