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Yes. The common misconception is that because an animal has hair or fur all over their body, insects cannot penetrate this barrier, and hence do not bite cats. This is largely incorrect. Animals can be bitten through fur; furthermore, most insect bites on cats happen on areas with little to no fur, like the nose and ears.
Cats can have fairly extreme allergies to mosquito bites. This is called mosquito bite hypersensitivity, and is an intense overreaction by the cat’s immune system. The symptoms for mosquito bite hypersensitivity can include lesions such as scaling, and areas of crusts and raw ulcers. Because this ailment can manifest as so similar to other skin diseases, it is important to have your veterinarian diagnose this issue.
Researchers at the American Chemical Society have recently discovered that nepatalactone, the essential oil that gives catnip its characteristic odor, is about ten times more effective at repelling mosquitoes than DEET – the compound used in most commercial insect repellants. Why nepatalactone acts as such a good repellent is still somewhat of a mystery. “It might simply be acting as an irritant, or they just don’t like the smell.” Chris Peterson, M.D., reports.