Health

Griffons have relatively few inherited health problems, but should still be tested for congenital defects, the most serious of which are Syringomyelia (SM) and Chiari-like malformation (CM). The typical life span of a Griffon is somewhere in the range of 10 to 15 years.

Birthing
Griffons usually have no trouble whelping on their own, but sometimes complications can necessitate a Caesarean section. The size of a litter is anything from 1-10 puppies. The size of the litter often determines the extent of these complications. When they are born, the puppies only weigh a few ounces (about 100 grams) and are small enough to fit in the palm of an adult's hand.

Cleft palate
One issue that is typically fatal for the puppies is having a cleft palate. It results in the puppy not receiving nourishment from the mother and eventually starvation. It is uncommon but, depending on the size of the cleft, it is possible for the puppy to survive. When it becomes older surgery can be done to close the hole.

Eyes

Most have large eyes that may require rechecks from a veterinarian.

Lacerations are a common issue amongst the breed. Because the Griffons have such large eyes and a short snout, there is very little there to protect their vision from foreign bodies. If a laceration is left untreated it can result in blindness.

As with most breeds, cataracts are a common problem as the dog ages. For many breeders it is a disappointment that the cataracts typically develop long after the dog has already been bred.

Lens luxations can be fairly common in the breed and result in secondary glaucoma

Glaucoma can also be a common issue amongst Griffons owing to the breed's facial features and eye size.

Although Griffons have a shortened snout, heat stroke is not a major concern for them as it is with other flat-faced breeds. The breed's shortened muzzle may cause respiratory problems in extreme heat, but overall they tolerate both hot and cold weather well. As with any breed, owners must use common sense and not leave them outdoors without protection from the elements or subject them to rigorous exercise during extreme temperatures, so let them in your house for cool air and some water.

Syringomyelia (SM) is a condition affecting the brain and spine, causing symptoms ranging from mild discomfort to severe pain and partial paralysis. Syringomyelia is characterised by fluid filled cavities within the spinal cord. SM occurs secondary to obstruction of cerebrospinal fluid (CSF) especially if that obstruction is at the foramen magnum. Not all dogs with SM have clinical signs. The presence of signs is correlated to the width of the syrinx and extent of spinal cord dorsal horn damage. Syrinxes can progressively expand and a dog which is asymptomatic in early life may eventually experience pain.

Health

Cavaliers can notably be prone to mitral valve disease, which leads to heart failure. This appears in many Cavaliers at some point in their lives and is the most common cause of death. Some serious genetic health problems, including early-onset mitral valve disease (MVD), the potentially severely painful syringomyelia (SM), hip dysplasia, luxating patellas, and certain vision and hearing disorders are health problems for this breed. As today's Cavaliers all descend from only six dogs, any inheritable disease present in at least one of the original founding dogs can be passed on to a significant proportion of future generations. This is known as the founder effect and is the likely cause of the prevalence of MVD in the breed. Additionally, bad breeding increases the chance that a Cavalier will develop MVD, so it is important to find a responsible breeder who uses dogs with healthy hearts rather than use the first breeder you come across. The health problems shared with this breed include mitral valve disease, luxating patella, and hereditary eye issues such as cataracts and retinal dysplasia. Cavaliers are also affected by ear problems, a common health problem among spaniels of various types, and they can have such other general conditions as hip dysplasia, which are common across many types of dog breeds.