To change his jockeys.
Cause their answer is always 'nay'. I'm sorry, I'll leave...
A seehorse.
None. Mice can't change light-bulbs as they are mere rodents without the physical or mental ability to do so. Not to mention it's much safer for them to pilfer food in the dark.
None, they just watch it burn out and follow it around for 30 years.
Because it was dead.
A tree has limbs.
Jockey straps.
Because they hold the reins!