Attaching a leash directly to their collar could hurt their small necks if they pull, and it's possible they could slip
out of the collar altogether (if they do slip out, harness or not, always make sure their collar has an up - to - date ID tag and MICROCHIP especially since mentioning collars can easily slip off with your address and phone number).
However, a spread
collar is also a fine choice for going tieless, whether you're pairing your white dress shirt with a light - colored summer suit — a perfect excuse to ditch the neckwear
altogether — or wearing it with a crisp pair
of chinos or jeans for a casual evening
out.