What are the differences between dog lice and human lice in terms of their characteristics and effects on their respective hosts?

Dog lice and human lice are different in terms of their species and preferred hosts. Dog lice are specific to dogs and feed on their blood, while human lice are specific to humans and feed on their blood. Dog lice can cause itching and skin irritation in dogs, while human lice can cause itching and skin irritation in humans. It is important to treat lice infestations promptly to prevent further discomfort and potential health issues.