Yes, donkeys often graze with horses.
donkeys
No
Equus, horses and donkeys.
Donkeys are like horses in some ways.
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 they dont
no
no
The poem Horses Graze is making the point that when horses graze, they aren't thinking about or worrying about what anyone else is doing. They just mind their own business and enjoy the grazing. This is part of their secret of remaining happy.