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Why can't my old Mastiff walk? Back legs useless, front legs wobbly.

Updated on September 23rd, 2025

Pet's info: Dog | English Mastiff | Female | spayed | 9 years and 4 months old | 145 lbs

9 yr old female english mastiff just recently she laid down and couldnt get up her back legs are useless to walk she can move them but not walk and became wobbly on the front legs when i support the back then she falls over and cant use the front other then to drag herself but only if shes on her right side and is uncomfortable also tore a chunk out of elbow callus by dragging herself and it smells like its rotting what is happening is it cancer

1 Answer

Most Helpful Answer

Kevin Sanada, DVM

Answered By Kevin Sanada, DVM

Veterinarian

Published on August 4th, 2017

Xena is in a really bad state and desperately needs to see a veterinarian as soon as possible.

Her inability to walk probably means that she has damage to her spinal cord or has severe arthritis. Cancer may be a possible cause, but I can't tell from the information given. Either way, she is really suffering and needs pain medication prescribed by a vet (do not give over the counter medication).

The elbow wound appears to be a pressure sore from laying down too long. She will continue to develop these, unless she is turned every two hours. That wound will also need professional treatment in order to heal.

Please understand that Xena has a very poor quality of life right now and she really needs professional help. Also, 9 years is rather old for a Mastiff, so you should understand that she may not be able to recover from this problem. A veterinarian will be able to give you a more definitive diagnosis and an idea of what the treatment options may be.
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