how old is Marley? when Milly was little they'd upset her stomach. Now she gets one when a friend buys them for her or they are in a showbag or the vet gives her a freebie and her stomach always seems fine.
Wow! I am so glad I read this post! I just bought some of these the other day for Lucy and have fed her 2 (there were 4 in the bag). I haven't seen a problem with her stomach being upset but after reading that cnn news story posted about Greenies I will be throwing the other 2 away!