i've got a mate that breeds kelpies. He uses comfortis while they are feeding and everyone is always healthy and happy, he has never had any issues.
he's actually the one who got me onto comfortis.
*EDIT* kelpies may be different to the larger breeds. this is just my experience with comfortis.
Last edited by Ven; 04-21-2012 at 08:01 PM.
"He is your friend, your partner, your defender, your dog. You are his life, his love, his leader. He will be yours, faithful and true, to the last beat of his heart. You owe it to him to be worthy of such devotion" Author Unknown