6 in the back leg
The 59 leg bones (per side -118 total) of a dog are:
Foreleg - 29
- Humerus 1
- Radius - 1
- Ulna - 1
- Carpals - 7
- Metacarpals - 5
- Phalanges -14
Hind Leg - 30
- Femur - 1
- Patella - 1
- Fibula - 1
- Tibia - 1
- Tarsals - 7
- Metatarsals - 5
- Phalanges - 14
The "dew claw" phalanges (equivalent to the big toe on humans) are vestigial on the hind feet and not obvious.