Mostly cameleons have long tounges because they use them to catch their food. To survive. They mostly eat insects. Like flys or other flying bugs etc.
Cows don't have tongs, so why bother asking?
Because they need to eat leaves and leaves are on tees
im assuming you mean tusks. Anyway, like teeth, tusks are bones so they grow long...does that answer your question?
Camels use tongs approximately 2 feet long, however some camels have been known to make salads with human tongs when a camel tong is unavailable.