If your dog is constantly scratching, biting, or licking himself, you’re not alone. It’s one of the most common reasons dog owners seek veterinary help. And while an occasional itch is normal, persistent scratching and chewing is a sign something’s wrong — from skin allergies to parasites.
In this article, we’ll break down the most common causes, how to identify them, what you can try at home, and when to speak to a vet.
🔍 Why Is My Dog Scratching and Biting Himself So Much?
1. Fleas or Mites (Parasites)
- The most common culprit.
- Even a single flea bite can cause severe irritation or an allergic reaction.
- Flea saliva = ultra itchy for some dogs.
Look for:
- Tiny black specks (flea dirt) in fur
- Red bumps or scabs around the base of the tail, belly, or groin
- Intense biting or scratching, especially near the back
💡 Solution: Monthly flea and tick prevention — even if you don’t see them.
2. Skin Allergies (Atopy)
- Just like people, dogs can be allergic to pollen, grass, dust mites, or food.
- Allergies often cause chronic scratching, licking, and skin infections.
Signs of allergies:
- Red, inflamed skin
- Constant licking of paws
- Scratching ears or armpits
- Recurrent ear infections
3. Food Sensitivities
- Proteins like beef, chicken, or dairy can trigger itchiness.
- Often overlooked, but common in sensitive dogs.
What to do:
- Try an elimination diet under vet supervision
- Switch to hypoallergenic or novel protein foods (e.g. kangaroo, fish)
4. Dry Skin or Environmental Conditions
- Low humidity or overbathing strips natural oils.
- Some dogs react to shampoos or detergents in bedding.
Tips:
- Bathe only with vet-approved, moisturising shampoos
- Use a humidifier during dry seasons
5. Hot Spots (Acute Moist Dermatitis)
- Red, wet, raw areas from intense licking or chewing.
- Common in humid climates or thick-coated breeds.
Treatment:
- Clean area, apply topical treatment, and use an e-collar to prevent licking
- Vets may prescribe antibiotics or anti-itch medication
6. Pain or Anxiety
- Dogs sometimes lick or bite due to joint pain or anxiety.
- Think of it as a coping behaviour.
Clues:
- Licking one specific spot constantly
- No signs of fleas or allergies
- Happens mostly when alone
🏠 Home Care Tips
- Use flea prevention year-round (even indoors)
- Wash bedding weekly
- Bathe every 4–6 weeks with a vet-approved sensitive skin shampoo
- Avoid over-bathing, which can dry skin out
- Try an elimination diet (with vet guidance)
👩⚕️ When to See a Vet
Book a consult if your dog:
- Is scratching or biting daily
- Has red, inflamed, or bleeding skin
- Has hair loss, scabs, or odour
- Is restless, anxious, or not sleeping well
💬 Final Thoughts
A bit of scratching is normal — but when it becomes constant, your dog could be in discomfort. Whether it’s fleas, food, or allergies, the right diagnosis is key. Don’t let your dog suffer in silence — there’s help.
🐾 Book a $49 Vet Consultation
Get real answers from a licensed Australian vet in minutes. No waiting rooms. Just expert care for your itchy pup.
🧠 FAQs
Q1: My dog doesn’t have fleas — why is he still itchy?
Fleas aren't the only cause — allergies, dry skin, or infections are common culprits.
Q2: Can I use human antihistamines?
Some are safe, but dosing is critical. Always speak to a vet first.
Q3: What if the scratching is only at night?
Could be linked to allergies or anxiety. Track when it happens and consult a vet.
Q4: Can food cause skin issues?
Yes — proteins like chicken or beef are common allergens in dogs.
Q5: Should I change my dog’s shampoo?
Possibly. Only use vet-approved shampoos made for sensitive or itchy skin.
📚 Citations
- Australian Veterinary Association. (2023). Skin Conditions in Dogs. Retrieved from https://www.ava.com.au
- RSPCA Australia. (2022). Caring for Itchy Dogs. Retrieved from https://www.rspca.org.au
- MSD Veterinary Manual. (2023). Atopic Dermatitis & Flea Allergy in Dogs. Retrieved from https://www.msdvetmanual.com
