FDA rules that allow an animal to be called "ambulatory" and enter the food chain (rules created after mad cow disease happened) are that the animal can stand and take 5 steps under its own power.

Prior to the creation of the term "non-ambulatory disabled" as it pertains to cows they would drag non-walkers onto trucks with winches to fill beef packer contracts.

If you are eating meat from like WalMart or McDonald's you don't want to see what it looks like alive. It's all bad.