A dwindling wild rabbit population, an increase in dogs being walked in Edmonton parks and possible illegal feedings could be to blame for a rise in aggressive coyote behaviour.

A sign warning of coyote activity has been posted in Terwillegar Towne. What should residents do?

Colleen Cassady St. Clair, a biological sciences professor with the University of Alberta, says the number of reported coyote sightings, observations and encounters has increased by about one and a half times per year.