No license or prescription is typically required if the laser is exclusively for use on animals.
Licensed practitioners (chiropractors, physical therapists, etc.) can purchase FDA-cleared Class 4 lasers for clinical use.
Specifically targets the veterinary and equine market.
You can generally only buy a Class 4 therapy laser for personal use if you have a prescription (RX) from a doctor or chiropractor.
Specialized distributors focus on therapeutic and industrial equipment. Examples include: