Purposes of a leash include: preventing animals from frightening or biting people or other animals, defecating and urinating in inappropriate places, endangering traffic, digging up lawns, causing other damage, getting lost, and getting away from owners. Leashes also provide a clear method of communication and ensure control during training of dogs.
Consider why puppies pull when they are walking; there are many things that tempt your dog when you’re out for a walk, like children playing in the yard across the street, you neighbor grilling some hot dogs and that squirrel in the tree at the park. Your pup will try to get where he wants to go, even if that means pulling you along with him! If he pulls on the leash and you allow him to, you’ve reinforced that pulling gets him what he wants. Once you’ve allowed him to do this, he’ll do it again and again:
Cat leashes come in a variety of colors, designs and models and are made of different materials. There are cat leashes made of leather, nylon and rope. Whereas the leather leash is one of the best qualities because of the characteristics of the material, it is also one of the most expensive and not very comfortable for the cat at the same time. Nylon cat leashes and harnesses are, however, more elastic, and thus more comfortable and also provide more control.