Yes they can be, especially if the horse steps on them or if they accidentally try to ingest them. If stepped on they can puncture a horses hoof and cause severe damage. If the horse tried to eat them they could cut their mouths or even swallow them and cause internal injuries and possibly colic.
Skeets was created in 1986.
Skeets McDonald died in 1968.
Skeets Gallacher was born in 1925.
Skeets McDonald was born in 1915.
Skeets Tolbert died in 2000.
Skeets Tolbert was born in 1909.
Skeets Martin died in 1944-03.
Skeets Quinlan was born on 1928-06-22.
Skeets Martin was born on 1875-01-25.
Jack Skeets Gleeson is 6' 2".
Skeets Herfurt was born on May 28, 1911.
Skeets Kelly's birth name is Graham Kelly.