What you might be thinking of is the stifle joint, which is the equivalent of the human knee. It's the joint that connects the femur (thigh bone) to the tibia and fibula (lower leg bones).
Here's why it's confusing:
* Structure: The stifle joint is a hinge joint like the knee, allowing for flexion and extension.
* Location: It's in the same relative position to the body as the human knee.
However, the knee in dogs refers to a different joint - it's the joint that connects the tibia and fibula to the tarsal bones (ankle bones). So, the "knee" in dogs is actually more like our ankle!