Is it illegal to have a dog with no leash on?

It depends on the specific laws and regulations in the jurisdiction where you live. In many areas, it is considered illegal to have a dog off-leash in public places, such as parks, streets, and sidewalks. However, some jurisdictions may have designated off-leash areas or parks where dogs are permitted to be unleashed under certain conditions.

It's important to check the local laws and regulations in your area to determine the specific rules and requirements regarding dogs on leashes. Failure to comply with leash laws can result in fines, penalties, or other legal consequences.