Just what do we mean by young pets, older pets and the miracles of marketing… It has been well documented that higher levels of protein and fat are required for growth of young animals — and that less is needed for older animals. The pet food manufacturers have exploited this natural situation to the fullest. People seem surprised when we ask them, “What level of protein do you feed your... Just what do we mean by young pets, older pets and the miracles of marketing… It has been well documented that higher levels of protein and fat are required for growth of young animals — and that less is needed for older animals. The pet food manufacturers have exploited this natural situation to the fullest. People seem surprised when we ask them, “What level of protein do you feed your...