The juvenile period for a Coton de Tulear typically spans from about three months to around twelve months of age, during which the puppy undergoes remarkable physical changes. Growth in small breeds like the Coton tends to be rapid in the early months, with most puppies reaching close to their adult height by six to eight months. However, they will continue to fill out and develop muscle tone for several months beyond that point.
During this stage, the Coton's signature cottony coat begins to transition from the soft puppy fluff into its longer, more textured adult form. This coat change can bring a period of intense matting, and owners should be prepared for increased grooming demands. The puppy's baby teeth will also give way to adult teeth, usually between four and six months, which often coincides with a surge in chewing behavior.
Regular weight monitoring remains important during the juvenile period, though the frequency can be reduced from daily to weekly or biweekly. A healthy Coton puppy should show steady, proportionate growth without becoming overweight. Because Cotons are a small breed, even a small amount of excess weight puts added strain on developing joints and bones.
Owners should be aware that growth plates in the long bones remain open during this period and are vulnerable to injury. High-impact activities like jumping from heights or prolonged running on hard surfaces should be limited until the veterinarian confirms that the growth plates have closed, which typically occurs around ten to twelve months of age.