My Gf gave her dog ( big dog) ONE of those and she threw up.. ( both ends) for 2 days,, and had to go to the vet,, because of dehydration.
Her vet told her that LOTS of dogs are allergic to something in them. like 20-30% of dogs,,and that is what happens.. YIKES!
I wouldn't give my dog one,, but I never thought that many dogs would be allergic to them.
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Rhonda, Bailey, Josie and my angel Bella Rue'
"Until one has loved an animal, a part of one's soul remains unawakened."
~Anatole France~