Actually I don't think that many STATES have leash laws most leash laws are local, especially municipal, ordinances. Thru the years I have heard of a few localities that have passed and attempted to enforce similar laws for cats. They usually are unsuccessful due to the nature of cats. It is possible to train a cat to a leash especially if the training starts while the kitten is very young, Part of the problem is the way a dog and a cat react to the leash. A dog unused to a leash will pull, tug, and try to run, maybe even chew at the leash, then it learns that it is just not going to be successful. A cat will do all that but in all three dimensions up down back forth left right and go into a frenzy of writhing clawing spitting climbing and generally just going berserk, and it will do the same dang thing everytime. A harness rather than a collar works best on cats, they can slip a collar faster than you can see it.. Cats can be trained to do and not do lots of things it is just harder to train them to do things on command, like sit, stay etc. Most localities require that dogs be confined (fenced) when not on a leash. Its harder to keep a cat confined since they can climb for one thing. Most authorities recognize the innate differences between cats and dogs and don't attempt to enforce strict control laws on cats. If a cat does become a problem though, there are usually nuisance and property damage laws that can be enforced against the cat owner. The penalties against the owner don't usually require that the cat be confined, but that the nuisance not reoccur, leaving it up to the owner to figure out how to do that. If it does reoccur it is a separate violation of the same law with possible higher fines each time until it becomes a continuing nuisance, usually covered by a different law, or the usually ignored cat-leash law may be enforced and the cat may be ordered to be removed from the owner. ( In the case of dogs there usually is a separate violation of the law for not being confined as well as any nuisance or damage. A second escape from confinement can be a more serious violation than a second nuisance, in fact there could be a severe violation for the escape even if no other violation occurs.) In some places, especially smaller towns, there are laws concerning all kinds of animals that folks may be allowed to keep, like cows, horses, chickens etc. In the town or residential areas owners are usually required to confine their animals. Often cats and dogs are included in the general animal laws. With the authorities cutting some slack for cats and often chickens. In more rural, actual agricultural areas, many laws require not that the animals be confined, as much as that they be prevented from entering other's property or public property. That usually amounts to the same thing as confining them. There are open-range areas where public road ways are not fenced off, if you hit and kill a cow with your car, you bought yourself some steak. But then leash laws do not apply to cows anyway. Oddly enuff, in some places "leash laws" do apply to horses but not cows, that is in unfenced areas horses must be picketed or driven on lead, but cows can be loose herded or free driven, go figure, even though you didn't ask. Those Open-range laws, of course, date back to the days of the Wild West, when the cat boys would set off on months long cat drives over the many famous cat trails, The Abysinia Trail, the Cheshire trail, driving those rangy LongHair...huh? -tle? What's a tle Cat? ohhhh. I see. Never mind.

Most town are hard on dogs, but have on cat oridences, or feral cat law, it is a pet double standard,