This video covers basic prong collar information, and shows demonstrations for how to properly size, put on, and fit a prong collar.

The brand we recommend is a Herm Sprenger.

The sizes shown are a 2.25 mm and a 3.0mm. For dogs weighing less than 5 lbs, there is a micro prong that comes in a 1.75 mm size, but this is not made by Herm Sprenger. For dogs this small, you may also opt to just use a slip lead.