Calves need to exercise to ensure normal bone and muscle development. Calves at pasture not only walk but also run about, jump and play. Calves in veal crates cannot turn around let alone walk or run. When finally taken out of their crates to go for slaughter, calves may stumble or have difficulty walking. There is a general increase in knee and hock swelling as crate width decreases. These challenges no longer exist with US farmers adopting the practice of raising veal in groups.