The phrase "addition to dogs" means something that is added or extra for dogs. It could refer to new things like toys, treats, or another dog joining the family. Full definition
In addition to the dog food options reviewed above, you can also try your hand at some homemade foods and treats to help you dog past this difficult time. (dogfood.co)
It is a well made product and a great addition to any dog owners home (they make them for cats too!). (animals-universe.info)
There is no significant amount of minerals or protein to make popcorn a healthy addition to your dog's diet. (doghealthnews.com)