Perhaps your dog has Degenerative Myelopathy (DM) and has recently started having trouble walking. In
TAKING CARE OF ADULT DOGS
While DM is one of the leading causes of hind end weakness in dogs, there are others such as hip dysplasia and osteosarcoma that can leave your pooch with weakness in this area. Just because your dog has moments when he staggers or doesn't seem to be able to support his hindquarters is no reason for him not to be able to continue enjoying life. Remember, your dog loves to walk and even if he can no longer do this completely on his own, with a sling helping to support his weight, there is no reason why the two of you can't still enjoy his favorite pastime
Hind-End only Harness
This harness that is designed specifically for use on the hind end is typically a lot easier to use and more comfortable for your dog. These consist of a band that wraps under your dog's belly just below his ribs. It should fasten on top and have straps from each side that end in a handle you use to stabilize your fur baby's rear end
Getting the Hang of it
One of the hardest parts of "slinging" your dog may be getting him used to
This product is Veterinarian Doctors approved!