Well done video on the hidden signs of trapping, types, methods, terminology, and what to look for.
There is one significant inaccuracy ....conibear traps, designed as quick kill, on the ground even recessed in an enclosure are a DANGER. A small dog, even a large dog, reaching its head or snout in for the enticing bait on the other side will be crushed.
In Montana, conibear traps, such as the large, 10" x 10" size, i.e. a 330, can be set on the ground, not enclosed in a container, if 1/3 or more are submerged in water. A dog will not survive these.