suggest you visit a vet to rule of any infection. Sometimes infection can cause loose stool.
another probable cause is diet. some diet reasons includes
- Sudden change of diet, since yur dog is on innova for sometime, this probably is not the cause. however, it could be the batch of dog food tat could be stale. You may want to change to a fresh new pack and observe any improvement. If yes, then throw away the old pack as it is probably contaminated
- recent treats or milk and milk by-products. yur pet may not be able to digest treats that you have recently fed him. cut all treats and keep to his basic meals only.
If all else fails, switch to homecooked brown rice and 1 meat type just to observe if situation improves. Pls chooose a meat type that your pet are able to take without problem previously. also, ensure your pet is well hydrated with fresh water available at all time.