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Rodent IdentificationBy Excel Environmental Services
0800 917 7123 (24/7)
www.excelenvironmental.co.uk
The Brown Rat, Common Rat, Sewer Rat, Norwegian Rat, Rattus norvegicus
• Rattus norvegicus is the most common genus of the Rattus species found in the United Kingdom and Europe.
• It is one of the biggest muroids (link) with a brown-black-grey appearance and can grow up to 10 inches in length.
• Some have argued that this species originated from mainland China but its reach now covers nearly the whole world.
• Only Antarctica is saved from these robust and persistent vermin.
The Brown Rat, Common Rat, Sewer Rat, Norwegian Rat, Rattus norvegicus
• Brown rat essential facts:
• Colour – varies between brown, grey and black colours• Ears – small• Eyes – small• Tail – shorter than head and body and has a two tone
colour• Weight – up to 550 g
The Brown Rat, Common Rat, Sewer Rat, Norwegian Rat, Rattus norvegicus
• Brown rat essential facts:
• Breeding – 3-6 per annum• Litter size – 8-10• Maturity – 3 months• Longevity– 1 year• Droppings – cylindrical and around 17mm in length and
6mm across. They invariable contain hair and are clustered in corners or along walls.
The House Mouse, Mus domesticus
• The house mouse is a petite mammal belonging to the order of Rodentia.
• They typically have large rounded ears and a pointed nose with a hairless tail.
• They are the most common species of the Mus genus living close by to humans.
The House Mouse, Mus domesticus
• House Mouse Essential facts:
• Colour – brown to greyish with a lighter colour underbelly• Ears – large and rounded • Eyes – small• Tail – smaller than body length• Weight – up to 25g
The House Mouse, Mus domesticus
• House Mouse Essential facts:
• Breeding – 5-8 per year• Litter size – up to 8• Maturity – 8 weeks• Average life span – 3-4 months• Droppings – small and cylindrical approximately 6mm in
length. They are moist and contain hair.
Black Rat, Ship Rat, Roof Rat, Rattus Rattus
•Rattus Rattus or the black rat is a common long tailed rodent of the genus Rattus.
• It is thought that they originate in tropical Asia and spread through Europe via the silk road trading routes.
Black Rat, Ship Rat, Roof Rat, Rattus Rattus
• Essential black rat facts:
• Colour – black to brown with a lighter grey underbelly.• Ears – large• Eyes – large and prominent • Tail – longer than the rat body
Black Rat, Ship Rat, Roof Rat, Rattus Rattus• Essential black rat facts:
• Adult weight – 300g• Breeding – 4-6 litters per year• Litter size – up to 8 pups• Maturity – 2-3 months• Average life span – 12 months• Droppings – these are shorter and thinner than that of
the brown rat, approximately 10mm in length with a point at one end.
Rodent Identification
• If you think that you may have a rodent problem, please don’t hesitate to contact Excel Environmental for a free quote and to arrange a survey.
• You can reach us on 0800 917 7123 free 24/7
• Or via www.excelenvironmental.co.uk