The main reason for this is that the lack of saliva in the mouth prevents food residue from effectively being washed away. (theheirtoblair.com)
You will also want to change the water daily because until dogs learn how to use straws there will always be food residue in their water bowls. (onpets.com)
Protecting your cat against dental disease from the start by removing food residue regularly may help prevent or delay the need for advanced treatment of dental disease. (cityvetsa.com)