Yes, donkeys often graze with horses.
donkeys
Equidae, which includes horses and donkeys.
No
Donkeys are like horses in some ways.
Equus, horses and donkeys.
Horses eat grass, they graze.
Anywhere there is food
Horses have 64 chromosomes while donkeys have 62, thus a horse has two more chromosomes than a donkey. (For the record a mule has 63 a mix of the horses and donkeys numbers.)
Donkeys are in the horse family so... yes.
no
no
no they dont