I've never had luck with any of my cats with a lease attached to a collar. They will wiggle out of it and run off or up a tree. I had to get a small dog vest to put my cats in to walk them. Once I got a vest, my cats were easier to keep on a leash. They never would walk constantly like a dog. They tend to find a place and then just lay down for a couple minutes and then walk in any direction. When walking a cat, they lead and not the other way around, it is an act of adventure to figure out the space not a walk from point A to point B. If you are that type of walker, you will be nothing but frustrated with walking a cat. I also know, that some cats, don't realized they are smaller than most dogs. One of my cats, was walking in the park when a dog made the mistake of stiffing and growling at my cat. Despite the leash, he took out the dog that had at least a hundred pounds on him. So don't think that just because your cat is small that they won't be the aggressors in the park, so try to be aware of how close the other animals are to you cat when walking.