As Northern Ireland emerges from its sub-zero temperatures, two populations appear not to have fared so well in the big freeze.
An apparent absence of house mice and rats has had a knock-on effect at Belfast City Council.
The council's pest control department has said there has been a decrease in calls over mice and rat problems during December.
| The council says calls over rat problems were down in December|
The Council's Pest Control Manager, Earl d'Hulst, said both populations may have been hit by a combination of the severe cold and lack of food in some of their habitats including sheds and garages.
The council provides a pest control service to both domestic and commercial rate payers. The council area takes in about 160,000 domestic properties.
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