At Sighthoundgoodies we offer a wide range of collars for Sighthounds. We sell leather collars and martingale collars for all Sighthound breeds such as Whippets, Galgos, Greyhounds and Podencos. All collars are specially made for Sighthounds. Because a their neck is often a bit wider than their head, normal dog collars slide off very quickly. These collars prevent this from happening.