Yes, it could be. Watch for signs of an obstruction as well. My boy ate a part of a blanket and ended up needing surgery to remove it.
Tyson, white, 4 years, Boxer & Thor, 2 year old GSD
Tiger and Raven, kitties, 10 and 11 years
Erin flashy fawn, Lucas, Flashy Fawn, Boxer angels, RIP 11-29-10 and 8-22-07