This is not the most pleasant of subjects, but it's still one that every dog owner should be aware of. Dogs can be affected by both
external and internal parasites. External parasites include fleas, ticks, lice, and mites. These external parasites, in turn, can carry other diseases or parasites. Thankfully, there are various methods to deal with these external parasites such as topical applications, pills, or medicated shampoos, collars, powders, etc.
Internal parasites include various worms and bacterial infections. These parasites can be diagnosed by a veterinarian (many times
after a fecal sample is provided) and treated rapidly and effectively by prescription de-wormers. Store-brought de-wormers are
considerably weaker and less effective.