Bruno (my Rat Terrier Mix) has been doing the same recently – my guess is that he’s getting bored with the current food and is ready for a change. Lucky for him, I am beginning the switch Thursday or so. He has been on this food for about/over 3 months or so. He wouldn’t eat all day, and then eat about the whole amount he was supposed to eat split into 3 feedings, almost all at once.
As Patty said, try a rotation, and keep the food away for a while, then reintroduce. I have been mixing a little bit of canned in Bruno’s along with other additives for other reasons besides general health, and he loves it when there is a little something extra special in his bowl in addition to the same old kibble and eats his portion just fine. This helps me keep him at 3 meals a day.
