Beware! I thought i would try my Portuguese water dog on this food as she was getting fussy with the shop brands. Even though i only payed half price with the introductory offer i still wish i had got a sample first. When the Tails food arrived i followed the advise of only putting a quater of Tails food to three quaters of the old food, makes sense i thought, but within less than a hour of feeding she brought it all back up again. This was on the Friday afternoon, she was sick for 48 hours and could not even keep water down. She also developed a bright red rash on her belly and legs. As it was now the weekend our Vets was closed but we came very close to needing a emergency appointment but after advise to see if she was still sick by monday i waited, and on monday morning she was able to keep down water and a little of her old food. Tilly has not got a sensative stomach and normally has no problem with changing brands. so i would strongly suggest that if you are going to try Tails food get a sample first. i now have 9kg of food to go in the bin. i am afraid to pass it on to someone else in case it make another dog ill.