Facts about Cotton Rats

1. 07

   The specialized vomeronasal organ in cotton rats allows them to detect pheromones with extraordinary sensitivity, enabling complex social communication and mate recognition across their territories.

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2. 06

   Introduced to Florida in the 1930s as an invasive species, cotton rats have since colonized wetlands across the Gulf Coast where they compete with native rodents for food resources.

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3. 05

   Cotton rats have a lifespan of approximately 1 to 2 years in the wild, making them among the shortest-lived North American rodents despite their high reproductive rates.

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4. 04

   Nocturnal cotton rats possess specialized molars with cusps arranged in S-shaped patterns that continuously grow throughout their lifetime to compensate for constant wear from grinding tough vegetation.

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5. 03

   Throughout the southeastern United States, cotton rats serve as primary reservoirs for hantavirus, transmitting the virus to humans through contact with infected urine and droppings.

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6. 02

   Sigmodon hispidus cotton rats construct elaborate grass nests measuring up to 15 centimeters in diameter where females give birth to fully furred, open-eyed pups.

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7. 01

   Weighing between 24 and 40 grams, cotton rats can produce up to 12 litters annually in optimal breeding conditions.

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