PDQ Mobile wrote:Hmmm.
Cows chew the cud but they also run around for fun especially younger ones and calves.
Lambs too spend a deal of time playing "king of the castle" and other chasing games.
Mad as a march hare?
The stoat and weasel family play vigorous games and are notably playful.
Then there's the birds!
Playing is an important development tool. Most older animals give it up once the need to conserve energy outweighs the benefits of play.
For most other animals it's either looking for food, impressing potential mates or handling territory, fleeing potential predators etc.
Exercise for 'fun' is debatable.
It all makes sense when you realise that preserving energy is equivalent to finding more food.
For example in predators the effort of finding food is higher which means conservation of energy is more important.
Which is why predators once they've eaten spend so much time sleeping (cats for example).