My boxer ate aluminum foil.....

[Vela]

Well actually it depends on whether or not he chewed it up, which if so he would most likely be fine, or if he swallowed it whole, in which case it could cause a problem with impaction. It won't digest or get smaller if it was swallowed whole so you will need to watch his poop for it and if he shows any distress have him seen by the vet. If he chewed it up then it should pass, as Karen said.

[linda starks]

my little doxie is sick and she is at the vet agin i think she ate something like that

[JenBKR]

My Roscoe got into the garbage can once and ate a little bit of foil that I had cooked something in. The vet said he should be fine since he only ate a little, and he was. I think it depends on how much your dog ate and if he swallowed or chewed, as stated above. You might want to call your vet to check though.