It is mentioned on their website you have to find it though, it should also be stated on the cans as well. It is fine to feed as a snack or as 1 meal with something else provided the other meal that day is a nutritionally complete one. Not one to feed as a regular part of their diet unless you have something to go with it.
Avoid biting when a simple growl will do
The Spirit Lives As Long As Someone Who Lives Remembers You - Navaho Saying
Vindication ~ For all those pets who became sick or lost their lives from tainted pet food