Quick Answer
New York has two main rat species: Norway rats and Roof rats. Norway rats are larger (7-10 inches, 12-18 oz), have small ears and a blunt nose, and burrow in the ground. Roof rats are smaller (6-8 inches, 6-12 oz), have large ears and a pointed nose, and climb trees and walls. Norway rats are more common in NYC and northern NY. Roof rats are more common in coastal areas. Both species carry diseases and cause structural damage.
New York Rat Identification Guide
Rats are a significant urban wildlife issue in New York, particularly in New York City and other major cities. Correctly identifying the rat species is important for choosing the right control methods.
Norway Rat vs Roof Rat Comparison
| Feature | Norway Rat (Brown Rat) | Roof Rat (Black Rat) |
|---|---|---|
| Size | 7-10 inches body, 12-18 oz | 6-8 inches body, 6-12 oz |
| Tail | Short, thick, about same length as body | Long, thin, longer than body |
| Ears | Small, close to head | Large, prominent, thin |
| Nose | Blunt, thick | Pointed, narrow |
| Color | Brown to gray | Black to dark brown |
| Droppings | Large (3/4 inch), capsule-shaped | Smaller (1/2 inch), pointed ends |
| Habitat | Basements, ground floors, sewers, burrows | Attics, roofs, trees, upper floors |
| Climbing | Poor climber | Excellent climber |
| Diet | Omnivore, prefers protein/grains | Omnivore, prefers fruits/nuts |
Signs of Rat Infestation
- Droppings (capsule-shaped for Norway, pointed for Roof)
- Gnaw marks on wood, plastic, and wires
- Grease marks along walls (from fur rubbing)
- Burrows in the ground (Norway rats)
- Scratching in walls and attics (Roof rats)
- Nests made of shredded paper, fabric, and insulation
- Musky odor from urine
Rat Control in Urban Areas
- Eliminate food sources: secure garbage, pet food, bird seed
- Seal entry points: gaps larger than 1/2 inch around pipes, doors, windows
- Install door sweeps on all exterior doors
- Remove clutter: woodpiles, debris, and overgrown vegetation
- Professional extermination: baiting and trapping programs
- Ongoing monitoring: regular inspections for new signs
FAQ: New York Rats
How many rats are in New York City?
Estimates vary widely, but NYC is believed to have millions of rats. The actual number is impossible to count, but the city has aggressive rat control programs.
Are rats dangerous in New York?
Yes. Rats can carry diseases (leptospirosis, salmonella, hantavirus), cause structural damage by gnawing, and start fires by chewing electrical wires. They also attract predators.
Professional Wildlife Removal in New York
If you need professional wildlife removal or pest control services in New York, our local guides cover the following cities:
- New York, NY — Wildlife & Pest Identification Guide
For help identifying the specific animal causing damage in your yard, see our What Animal Is Digging Holes in My New York Yard? guide.
Sources: US Fish and Wildlife Service, USDA Wildlife Services, state wildlife agencies, CDC, academic extension services. This guide is for informational purposes only and does not constitute professional wildlife management advice.