Answer :

Final answer:

Demodex mites are present on all dogs, feeding on lipids in the skin's sebaceous regions. Two species, D. folliculorum and D. brevis, usually coexist harmoniously with their hosts but can cause issues if their populations become imbalanced.

Explanation:

Demodex mites are present on all dogs in small numbers. These tiny arthropods, often less than half a millimeter in size, are a normal part of the canine skin microbiota.

Specifically, there are two species of Demodex mites found on canines - similar to those found on humans - that feed on the lipids produced in the sebaceous regions of the skin. D. folliculorum, the larger species, tends to cluster around hair follicles, while D. brevis, the smaller one, is more commonly found near delicate areas like the eyelid rim.

These mites usually maintain a symbiotic relationship with their canine hosts, causing no harm under normal conditions. However, an imbalance in this relationship could potentially lead to various skin conditions.

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