Conservationists have received reports of dogs attacking the endangered birds at Mission Beach, in areas where they have been forced out of the rainforest after Yasi in search of food.
Rangers have established about 20 rainforest feeding stations and carried out aerial drops of fruit to keep the animals from starving.
But the lack of native fruits still has cassowaries crossing busy roads and venturing near homes in search of something to eat.
Mission Beach local and conservationist Liz Gallie said pet owners needed to keep tabs on their dogs.
Dog attacks and car accidents are considered the two biggest threats to cassowaries in the Wet Tropics, with about 1000 of the birds remaining in the wild.
Ms Gallie said motorists also needed to keep an eye out for cassowaries on the roads.
“The real issue is going to be the influx of the recovery effort with all of those vehicles driven
Read More HereStarving cassowaries fight to survive | Local Cairns Cyclone News | cairns.com.au