Hi
We have a beautiful lab pup. Due to issues with his food causing an upset tummy he's been moved onto Royal Canin Gastrointestinal food. He's had one full day on it and it's like there is also something in it that doesn't agree with him.
His stools are better but he's gone loopy. He's showing no interest in toys where previously he's loved them instead he'll lunge for my arm/hand. He's whining for more food even though he is having plenty, the vet gave me a weight range and he's top end on what I'm feeding him. He is pacing - won't settle at all, whining even when it's not for food, banging into things with his head such as baby gate, crate gate (the crate gate is open and he's outside, he's banging it to slam and bounce open again. I haven't locked him in don't worry).
I've had plenty of dogs throughout my life and I've never seen this behavior. Its almost obsessive and hyper active.
Could it be the food?
Its like his entire temperament has changed