Dogtra produces the world's finest e-collars. Dogtra's is known for user-friendly e-collars that perform in the most demanding training conditions. Dogtra offers a complete line of e-collars from small-breed pet trainers to a variety of sporting dog units as well as K-9 Police work. Dogtra is a member of ECMA (Electronic Collar Manufacturers Association), and PETT (Partnership for Electronic Training Technology).