I have an 11 year old chihuahua who is a puppy mill rescue; she was not rescued until just before her eighth birthday. My pal is on medication for a sensitive stomach; she also has very few teeth with which to chew because they fell out from overbreeding. My dog loves Wellness dog food and she has no problem digesting it.  Since this Wellness dog food is a pate my dog missing most of her teeth is not a problem in her eating it.