Rats

Rats

Common rat:Also know as Norway or Brown rat it is a worldwide pest of commercial and domestic premised originated from Asia it is a nocturnal creature like a mouse eats about 20-25g of dry foods a day and cannot survive without drinking water. Rats have a behaviour called neophobia (new object reaction). A single rat produces up to 40 droppings a day capable of carrying diseases common ones are salmonella and weils disease. The brown rat sexually matures at 8-12 weeks the gestation period lasts for 21-24 days, average litter size 6-11. Litter per year 3-6. Adult rat weigh average 335g they have small ears small eyes tail slightly shorter than head and body and live up to a year.
Again like mice they have the ability to gnaw and cause structural damage of a wide materials and property and will also cause damage and contamination of stored and processed food. To control rats similar to mice the rat infestation may take longer to control due to neophobia (new object reaction.

Black rat:
Known as the ship rat or roof rat found worldwide but very limited in the UK and is normally found near ports. Major pest of ships has large eyes slender body, tail longer than the head and body. Sexually matures 12-16 weeks, gestation period 21-22 days litter size 6-10. This Black rat was responsible for spreading the bubonic plague throughout Europe.

Weighs 100-300g (average 225g)
Combined head and body length 150-220mm
Tail length 180-250mm

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