Dogs will be bitten by mosquitoes, especially the dog's abdomen and some shaved parts, which are prone to mosquito bites. Mosquito bites on dogs are similar to mosquito bites on humans. Mosquitoes will leave red wounds on the dog's skin, which will then cause the wounds to become itchy and the dogs can't help but scratch them.

Methods to prevent dogs from being bitten by mosquitoes:

1. Wear a mosquito repellent collar. Buy a mosquito repellent collar specifically designed for dogs and simply wear it around your dog’s neck to prevent your dog from being bitten by mosquitoes.

2. Wear a mugwort bag. Mosquitoes don’t like the smell of mugwort, so you can make a mugwort bag and tie it to your dog to effectively reduce mosquito bites.

3. Install mosquito nets. Mosquito-proof mosquito nets are also a good choice, allowing dogs to play and sleep in the mosquito nets with peace of mind.

4. Clean and dry. Keep your dog clean and dry, and bathe them frequently. Dirty dogs are more likely to attract mosquitoes.