Spinal issues and intervertebral disc disease both appear on the French Bulldog's list, and they are connected to something that looks purely cosmetic.
The breed's short screw tail is produced by malformed vertebrae. The same developmental process can affect vertebrae further up the spine, producing hemivertebrae — wedge-shaped bones that can destabilise the spinal column and, in some dogs, compress the spinal cord.
Most affected dogs are fine. A proportion develop hind limb weakness, incoordination, or incontinence, usually appearing in the first year, and surgery is sometimes needed.
Practically this means treating a young Frenchie's back with the same care a Dachshund's gets: discourage jumping off furniture, use ramps, keep the dog lean, and take any unexplained hind limb weakness seriously and quickly.
The rest of the list is long — eye disorders and cherry eye, skin fold infections, allergies, gastrointestinal and oesophageal disease, dental disease, patellar luxation and hip dysplasia. Most of it is anatomical rather than bad luck, which is why breeder choice matters so much here.
The Akita carries hip dysplasia and no comparable structural liability.