I've heard cat food is really bad for them. Too high in fat. It can make their stool runny too.
Mine gets bored with just dried kibble too, although he preffered the Fromm kibble over the Canidae. I agree with Sasha311, it's the consistency that they love. A spoonfull of wet food in the kibble does make them happy though.
Garrett does seem to be part cat too, because he absolutely loves fish
. Salmon and tuna are his favorite.