If you are in alberta Rob has the regs at the top of the forum but here is the link again
http://www.albertaregulations.ca/
or
Snares* for taking fur-bearing animals may only be set by
holders of Registered Fur Management Licences or
— by holders of Resident Fur Management Licences for
bobcat, coyote, fox, squirrel or wolf (provided they meet
the requirements listed in this section) and for beaver
(provided the snare loop is completely under water).
— by residents for rabbit or hare on lands to which they have
right-of-access (provided the snare wire is not larger than
20-gauge and the snare loop is not more than 13 cm (5
in.) in diameter).
* Snare devices include neck snares, power-neck snares and
foot snare