I've recently switched my 1yo YLM from LB puppy to LB adult food and also from Pro Plan to Eukanuba. I've been training about 30min to 1hour a day mostly late in the evening and even sometimes after dark due to the heat. He does farely good put seems to get tired after only about 7 or 8 short retrieves. My question is should he be fed a food with a higher protein/ fat ratio or so called "performance food" ie. Pro Plan Performance or Eukanuba Performance, and also is this food ok for a dog that stays in a crate during the day and will it cause him to run too hot during the summer? Thanks for any help and sorry for so many questions I'm still new to all this stuff.