Diarrhoea
My female dog has been eating various dry and sometimes wet foods with chicken/poultry for years and has never had any issues with the protein. When I mixed a bit of this can into her food, she got slimy diarrhoea and woke me up the next day because she urgently needed to go outside – that never happens otherwise. Maybe other dogs tolerate it well, but I gave the rest away... At least, according to her, it tasted great... The best-before date was still far off, and the food didn’t smell bad either.