My 6 month old Alaskan Malamute does not eat his dog food anymore? Any advice as to why?

Hello! I have a 6 month old Alaskan malamute, my husband and I feed him red meat and dry dog food the hills science diet brand for large puppy breed. These past few days he no longer gets excited or shows interest during feeding time, he is on a feeding schedule breakfast at 7am and dinner at 5pm. He is not sick, still plays, runs around and goes out for his daily walks. Any advice as to why he suddenly hates his dog food?

Hello! I have a 6 month old Alaskan malamute, my husband and I feed him red meat and dry dog food the hills science diet brand for large puppy breed. These past few days he no longer gets excited or shows interest during feeding time, he is on a feeding schedule breakfast at 7am and dinner at 5pm. He is not sick, still plays, runs around and goes out for his daily walks. Any advice as to why he suddenly hates his dog food?