Yep! This is EXACTLY what my Stedman did with Canidae. He was eating it just fine for a while - then he started looking skinnier and skinnier and I paid VERY CLOSE attention to how often he went to his bowl and ate as I free feed, so the food is always down....and it wasn't alot

He just lost total interest in it and decided that he didn't like it anymore, the little stinker!
Tatum on the other hand, well...she'll eat anything you put in front of her

She's my little oinklet