I've asked this question about dogs not so long ago, and the short answer was - dogs are the most diverse looking species of mammals because they got a small number of genes that have a big impact on appearance.
I would like to ask a follow up question- differences in appearance are easy to notice, and I would like to learn about other traits that might be genetically based.
Are there other major differences between dog breeds, like longevity, cognitive performance, friendliness, etc? Or are all dogs more or less the same in traits other than appearance?
Are there plots of traits like these among different dog breeds that identify outliers?