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Photographic gallery.  Thousands of particles under the microscope.
Dog Dander

Dog Dander

This is a sample collected from the fur of a dog. The length of the skin flakes is unique to dogs.

Transmitted Phase Contrast Illumination


Significance in the Environment:

Dog dander is common in homes with a pet dog but is also common in office and school environments from the clothing of dog owners. It is more common than cat dander in office and school environments because dogs tend to generate more dander than cats. Fewer people are sensitive to dogs than to cats so the presence of dog dander is generally not a source of health complaints in these environments.

Characteristic Features:

Dog skin flakes tend to be about three times or more as long as they are wide. In indoor tapelift samples they can be confussed with very fine wood sawdust particles but the wood sawdust particles almost always contain cell structure or distictive fibril structure at the edges that distinguish the sawdust from the dog dander. Sawdust has a much higher birefringence than dog dander and so can easily be distinguished when viewed with crossed polarized light.

Associated Particles:

Dog hair may be found with the sample.