I've had an old pair of boots for almost 20 years. The leather is cracked in places and the soles almost smooth. They occasionally let water in and have done more miles than I could ever remember.
Max, my lurcher dog, has walked more miles by my side than any pair of walking boots I've ever owned and has been there when most of these pictures where taken.
He's quite an old boy now but still shows no lack of enthusiasm whenever the bag and tripod come out!