Beef tendon is a thick tendon on the foot of a cow, just like a fist, not a long tendon. The long tendon is the big tendon on the calf. A cow's hoof is only about a catty thick tendon. But cowhide must be removed. There are many kinds of beef tendon, yak is the best, followed by cattle, followed by buffalo; Mature cows are the best, followed by calves and old cows; Aggressive people are the best, people with weight are the best, and people without disease are the best. Some animals also contain tendons, among which bear's paw and camel's paw are the best, followed by horseshoe, donkey's hoof and pig's hoof.