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| Common name | House mouse | Norway rat | Roof rat |
|---|---|---|---|
| Scientific name | Mus musculus L. | Rattus norvegicus Berk. | Rattus rattus L. |
| Body length | 2.5-3.75in/65-95mm | 6-11in/150-280mm | 5-8in/130-200mm |
| Tail length | ~3.75in/95mm | 4-9in/100-230mm | 6-9in/150-230mm |
| Adult weight | 13-30g | 340g-500g | 150-250g |
| Juvenile weight | 6-12g | 40-300g | 40-130g |
| Gestation period | 18-21 days | ~22 days | ~23 days |
| Litter size | 5-8 (average) up to 13 | 8-9 (average) up to 14 | 4-8 |
| Breeding potential | 6-10 litters | 4-6 litters | 3-4 litters |
| Weaning age | ~21 days | 20-29 days | 28-35 days |
| Sexual maturity | 6-10 weeks | 8-12 weeks | 12-16 weeks |
| Home range | 6-30ft/2-10m can be 100ft+ | 25-100ft/7.5-30m can be 500ft+ | 25-100ft/7.5-30m can be 500ft+ |
| Dispersal movements | 30-300m up to 1.25mi/2km | up to 4 miles/6.5km | 50-500m up to 3 miles/4.8km |
| Lifespan | 1-2 years | 6 month-1 year (average) up to 3 years | 5-18 months (average) up to 3 years |
| Daily food intake | 2-4g | 15-30g | 7-15g |
| Daily water intake | little-6ml | 30-50ml | 29-59ml |
