Health

The breed is prone to spinal problems, especially intervertebral disk disease (IVDD), due in part to an extremely long spinal column and short rib cage. The risk of injury may be worsened by obesity, jumping, rough handling, or intense exercise, which place greater strain on the vertebrae. About 20–25% of dachshunds will develop IVDD. Dachshunds with a number of calcified intervertebral discs at a young age have a higher risk of developing disc disease in later life. In addition, studies have shown that development of calcified discs is highly heritable in the breed. An appropriate screening programme for IVDD has been identified by Finnish researchers and a UK IVDD screening programme has been developed for breeders with the aim to reduce prevalence of spinal problems.

Treatment consists of combinations of crate confinement and courses of anti-inflammatory medications (steroids and non-steroidal anti-inflammatory drugs like carprofen and meloxicam), or chronic pain medications, like tramadol. Serious cases may require surgery to remove the troublesome disk contents. A dog may need the aid of a cart to get around if paralysis occurs.

A minimally invasive procedure called "percutaneous laser disk ablation" has been developed at the Oklahoma State University Veterinary Hospital. Originally, the procedure was used in clinical trials only on dachshunds that had suffered previous back incidents. Since dachshunds are prone to back issues, the goal is to expand this treatment to dogs in a normal population.

In addition to back problems, the breed is prone to patellar luxation where the kneecap can become dislodged. Dachshunds may also be affected by osteogenesis imperfecta (brittle bone disease). The condition seems to be mainly limited to wire-haired Dachshunds, with 17% being carriers. A genetic test is available to allow breeders to avoid breeding carriers to carriers. In such pairings, each puppy will have a 25% chance of being affected.

In some double dapples, there are varying degrees of vision and hearing loss, including reduced or absent eyes. Not all double dapples have problems with their eyes and/or ears, which may include degrees of hearing loss, full deafness, malformed ears, congenital eye defects, reduced or absent eyes, partial or full blindness, or varying degrees of both vision and hearing problems; but heightened problems can occur due to the genetic process in which two dapple genes cross, particularly in certain breeding lines. Dapple genes, which are dominant genes, are considered "dilution" genes, meaning whatever color the dog would have originally carried is lightened, or diluted, randomly; two dominant "dilution" genes can cancel each other out, or "cross", removing all color and producing a white recessive gene, essentially a white mutation. When occurring genetically within the eyes or ears, this white mutation can be detrimental to development, causing hearing or vision problems.

Other dachshund health problems include hereditary epilepsy, granulomatous meningoencephalitis, dental issues, Cushing's syndrome, thyroid and autoimmune problems, various allergies and atopies, and various eye conditions including cataracts, glaucoma, progressive retinal atrophy, corneal ulcers, nonucerative corneal disease, sudden acquired retinal degeneration, and cherry eye. Dachshunds are also 2.5 times more likely than other breeds of dogs to develop patent ductus arteriosus, a congenital heart defect. Dilute color dogs (Blue, Isabella, and Cream) are very susceptible to color dilution alopecia, a skin disorder that can result in hair loss and extreme sensitivity to sun. Since the occurrence and severity of these health problems is largely hereditary, breeders are working to eliminate these.

Factors influencing the litter size of puppies and the proportion of stillborn puppies per litter were analyzed in normally sized German dachshunds. The records analyzed contained data on 42,855 litters. It was found that as the inbreeding coefficient increased, litter size decreased and the percentage of stillborn puppies increased, thus indicating inbreeding depression. It was also found that young and older dams had smaller litter sizes and more stillborn puppies than middle-aged dams.

Health

Labradors are somewhat prone to hip and elbow dysplasia, especially the larger dogs, though not as much as some other breeds. Hip scores are recommended before breeding and often joint supplements are recommended. They also suffer from the risk of knee problems. A luxating patella is a common occurrence in the knee where the knee dislocates and goes back into place. Eye problems are also possible in some Labradors, particularly progressive retinal atrophy, cataracts, corneal dystrophy and retinal dysplasia. Dogs which are intended to be bred should be examined by a veterinary ophthalmologist for an eye score. Hereditary myopathy, a rare inherited disorder that causes a deficiency in type II muscle fibre. Symptoms include a short stilted gait or "bunny hopping," and in rare cases ventroflexion of the neck accompanied by a kyphotic posture. There is a small incidence of other conditions, such as autoimmune diseases and deafness in Labradors, either congenitally or later in life. Labradors often suffer from exercise induced collapse, a syndrome that causes hyperthermia, weakness, collapse, and disorientation after short bouts of exercise. Labradors like to eat, and without proper exercise can become obese. Laziness also contributes to this. Obesity is a serious condition and can be considered the number one nutritional problem with dogs. Therefore Labradors must be properly exercised and stimulated. A healthy Labrador can do swimming wind sprints for two hours, and should keep a very slight hourglass waist and be fit and light, rather than fat or heavy-set. Obesity can exacerbate conditions such as hip dysplasia and joint problems, and can lead to secondary diseases, including diabetes. Osteoarthritis is common in older, especially overweight, Labradors. Labradors should be walked twice a day for at least half an hour.