Coil Spring Traps are foot-hold restraining devices used to catch and hold wild animals. This style of trap has been in use since the early part of the 20th century and is widely accepted as a cost effective and efficient tool for managing wildlife populations. Coil Spring Traps are manufactured of steel components and powered by a set of compact coil springs.
Base plate holding the dog and springs is a little light for a trap this size. I'm sure it would do fine on coyotes but would be skeptical if you were targeting anything larger. I ended up laminating flat stock in the suspect areas.