There are numerous causes for itching in dogs. Fleas are one of the most common and can be easily identifiable. If you see small black bugs moving and jumping on your dog, then you are likely seeing fleas. When they bite your dog, it can cause intense itching, and dogs with flea allergies can develop terrible skin infections from just one flea bite!
If your dog is scratching a lot and chewing the fur over his lower back just above his tail, then he may have fleas. Ticks and mosquitoes are examples of other bugs that can cause itching when they bite.
Allergies are also one of the most common causes of itching. Dogs can have environmental and food allergies just like people. With food allergies, your dog may be itchy all over. This includes his ears, and you may notice your dog shake his head and scratch his ears very often if he has an ear infection.
Dogs can be allergic to things in the environment like grass, pollen, weeds, and trees. This results in itching and inflammation in areas that contact these allergens. This is called eczema in people but is known as atopic dermatitis in dogs. Toxic plants like poison ivy and poison oak can also cause contact allergies.
Dogs that are stressed or anxious might lick their legs or their feet, but they might not actually be itchy. Licking can be a nervous habit, and it is important to find a cause for the dog’s anxiety because excessive licking can cause hair loss and infection.