Can a dog have 5 toes on back feet?

Answer 1

If you are counting the pad, it is normal. It should be on the upper part of the leg.

Another answer:

Four toes extend forward from a dog's pad; their fifth toe (also called the "dew claw") is farther up the leg. A sixth toe is not normal; it's a mild form of birth defect.

Answer 2

A number of mutations of the LMBR1 gene, in dogs, humans, and mice, can cause polydactyly.[16] Dogs, like other canids, normally have four claws on their rear paws; a fifth is often called a dewclaw and is especially found in certain Dog Breeds,[16] including the Norwegian Lundehund and Great Pyrenees.

Information from wikipedia

It is not normal for a dog to have six toes on its rear feet, polydactyly is an abnormality of the genes,

very ancient dogs had six toes on each foot,

A puppy about 8 months old strayed into our garden yesterday, she has 6 toes on her rear feet, so I suppose it's not that rare after all

Answer 3

Yes