None. They will never find one that burned as brightly as the first one.
or
The same as a regular year, but with less calories.
or
One is a blood-sucking parasite, the other is an insect.
or
When it came time to pay, the skunk didn't have a scent, the deer didn't have a buck so they put the meal on the duck's bill.
or
Because there's no one else to wag it for him.
or