It is not protein but "sugar" that destroys kidney function, because almost all of the body is composed of protein, and protein is needed to repair damaged kidneys.
Renal dysfunction, protein index imbalance, is the "consequence" not the "cause" of the kidney's failure to filter waste while retaining nutrients. What destroys kidney function is "sugar", and carbohydrates are broken down into sugar!
Although the film is about humans, the pathology and data analysis of humans and animals are basically the same. For example, in terms of kidneys, both are analyzed based on indices such as BUN, CREA, blood pressure, etc. In the past, treatment methods were roughly the same for humans and animals. However, new research has overturned the idea that a low-protein diet can help kidney disease.
Although the video is for humans, as the host you are worth watching!
Remember to spend some time watching the movie! The following short video has a more detailed deconstruction 
youtube : #shishikeke101