Flea

When a flea bites, it injects toxic saliva into the host's body, causing skin inflammation, causing itching, scratching, biting, and hair loss in pets. People are highly susceptible to infection, and bites can also cause inflamed, itchy red bumps, which can lead to allergic dermatitis in severe cases. Moreover, the reproduction ability of fleas is amazing. If one flea is found on a dog, it means that hundreds of flea eggs and larvae are present in the home environment. Therefore, once discovered, while deworming, the surrounding environment must be thoroughly and vigorously cleaned.

Symptoms:

The dog scratches frequently, and small black particles often appear or fall off the body. You can put these small black particles on a paper towel and drip with water to see if they dissolve into blood red. If they change color, it means they are probably the excrement of fleas after sucking blood.

Lice

Lice are divided into hair lice and blood-sucking lice. Hair-sucking lice feed on hair and cuticle debris. Blood-sucking lice, as the name suggests, suck blood. The same thing is that they can cause damage to the host's epidermis. Injury and infection can cause intense itching and, in severe cases, large areas of hair loss and redness and swelling. Lice can be transmitted to humans through direct contact and multiply on the outside of the human body, causing itchiness all over the body.

Symptoms:

Blood-sucking parasites cause itching and restlessness in dogs, and small bleeding points, small nodules, and even pus will appear on the skin.

Ticks

Ticks mainly suck blood, and their greatest danger is that they can transmit a variety of pathogenic bacteria and pathogens. The amount of blood it sucks is huge. Some hard ticks can suck blood for several days without moving at all. If the dog is seriously infected, it will be malnourished and anemic. When dogs are infected with ticks, their owners are inevitably bitten. Humans being bitten by ticks may develop highly dangerous emergencies such as tick disease and serious chronic complications such as Lyme disease. Ticks like to lurk outdoors in weeds or on trees. Dogs are more susceptible to ticks than cats who don't like to go out. Summer is the time when parasites are most abundant. It is recommended to take your dog to play in the grass as little as possible to avoid infection.

Symptoms:

Tick bites and blood sucking can cause local skin congestion, edema, acute inflammatory reaction, and can also cause secondary infection. A blood-sucking tick is about the size of a soybean and is visible to the naked eye.