The phrase "different breeds" refers to various types or kinds of something. It implies that there are diverse or distinct variations within a particular category or group. Full definition
If you are thinking about getting a dog, it's smart to research the characteristics of different breeds of dogs to decide which one is right for you and your family. (my-favorite-dog.com)
With so many different breeds of dogs how is a person going to narrow down the perfect dog for their new pet? (dogingtonpost.com)
The initial onset of disease occurs at different ages in different breeds of dogs. (italiangreyhound.org)