Protein consists of amino acids and plays an important role in cell renewal and growth. However, good quality and digestibility are important. Too much inferior, poorly digestible protein causes an unbalanced intestinal bacteria and can therefore lead to soft faeces and flatulence as well as to increased production of ammonia by protein-digesting bacteria. This means a high load of the liver.
The protein level of the dog food can have a considerable influence on the behaviour of the dog. For the first time this was scientifically researched by animal psychologist Dr Roger Mugford. He could prove that by a reduction of the protein in the total ration, many dogs were less aggressive. Hyperactive dogs were also generally calmer and more balanced.
From experience I can say that in some of my customer dogs an excess of poorly digestible proteins has led to increased aggressiveness and activity. With a change in diet we were able to quickly get the problem under control.
For a hyperactive or aggressive dog it is therefore worth checking the ration with a certified animal nutritionist.
Source: Heidi Herrman G + H Tierernährungsberatung