One of the first things new dog owners buy, along with dog food and a comfortable bed, is a leash. Because no matter the size or age of your dog, it’s going to need to be walked. You’re going to want a leash that’s safe, reliable, weatherproof (ideally), and maybe even nice-looking.
Here is my retractable leash recommendation – I like the retractable one as they usually want to do a little more off road exploring than I want to do.