Dogs that Can't Swim
Basset Hounds' have squat bodies that make it difficult for them to swim. Low to the ground with short legs, Basset Hounds move slowly. They carry two-thirds of their body weight in the front of their bodies. This uneven distribution of weight makes Basset Hounds poor swimmers when they are in the water.
Bulldogs should wear a life vest and be supervised when they are in any water. Their large, heavy bodies can sink like a stone. Add to that the breed's typical respiration difficulties, and Bulldogs can drown in a matter of minutes.
The famously fluffy Chow Chow has very thick fur, which is either rough or smooth. While the top coat can vary, all Chow Chows have wooly undercoats to insulate against cold weather. This undercoat helps to keep Chow Chows warm in water, but the double layer of thick fur can become waterlogged. The dense hair weighs down the Chow Chow, increasing its chance of drowning while in water.
The Dachshund's long, low-slung body works against it when swimming. The signature short, stubby legs of the Dachshund don't provide it with enough thrust to stay afloat. It also struggles to keep its head above water due to its short neck.
The Maltese is a very small dog with a square and compact body. Although not conducive to strong swimming, its body can manage in water. The danger for this breed is that it can become easily scared or cold if swimming for an extended period of time. If that happens, its chances of drowning increase.
The Pekingese is a small lapdog is stocky and muscular. It has a thick undercoat with a long and straight overcoat. The Pekingese heavy coat is a hindrance to its swimming ability. The dense fur can become saturated with water easily, causing the Pekingese to sink and drown.