I sure hope it's OK for them cause I have two that eat it all the time. I have tried over and over to stop them but there is no way I can unless I muzzle them!
(which I would never do!!!!) They never throw up but their stools are interesting looking at times.
My dogs also like to dig up the acorns that the squirrels buried.
They do try and eat them, but I always take them out of their little, busy mouths. (poor squirrels!)