Why Is My Labrador Losing Fur? | Common Causes

Labradors shed. That part is normal. A bald patch, thinning over one spot, broken coat, or hair coming out with redness and scratching is a different story. Fur loss in a Lab is usually a clue, not the whole problem.

The first step is spotting what kind of loss you’re seeing. Is it all over the body, or just the tail, belly, ears, and sides? Is your dog chewing, licking, or rubbing? Did the coat turn dry, dull, or scaly first? Those details can steer you toward the right cause faster than guessing with shampoos and home fixes.

This article walks through the causes vets see most, what each one tends to look like, and when a Labrador needs prompt care. You’ll also get a practical way to track the pattern before your appointment so the visit is more useful.

Why Is My Labrador Losing Fur? Common Patterns To Notice

Before you think about disease names, look at the pattern. Hair loss from itching often comes with red skin, scabs, chewing, or broken hairs. Hair loss from hormone trouble often shows up with thinner coat, dry skin, and less itch. Infections may leave round spots, crusts, odd smell, or greasy skin.

Normal seasonal shedding is spread across the coat and leaves the skin looking healthy underneath. The hair keeps coming, but you don’t see bare areas. True fur loss, also called alopecia, leaves visible thinning or patches where hair should still be present. The Merck Veterinary Manual page on hair loss in dogs notes that alopecia is a sign with many causes, which is why the pattern matters so much.

Clues That Point To Itch-Driven Hair Loss

If your Labrador is scratching hard, chewing the paws, rubbing the face, or gnawing the tail base, hair loss is often self-inflicted. The dog is damaging the coat because something is making the skin itch. Fleas, mites, skin infection, and allergies sit near the top of the list.

• Tail base and lower back: fleas or flea allergy
• Face, ears, feet, and belly: allergies are common
• Elbows, ear edges, chest, and hocks: mites can show up here
• Round patches with scale: fungal infection is on the list

Clues That Point To Non-Itchy Hair Loss

If the skin is not that itchy, look harder at body-wide issues. Thyroid disease and Cushing’s disease can thin the coat. Some dogs also gain weight, seem less lively, drink more, or develop skin that feels dry or thin. Those cases don’t sort themselves out with a new brush or fish oil alone.

Labrador Hair Loss Patterns That Point To A Cause

A Labrador’s coat can tell you a lot. A smooth bald patch on the flank is different from a ragged area chewed raw. Hair missing from both sides of the body can mean something else again. Here’s a broad look at the usual suspects.

Cause	What It Often Looks Like	Other Clues
Heavy seasonal shedding	Loose undercoat all over, no true bald spots	Skin looks normal; brushing removes piles of hair
Fleas or flea allergy	Thinning near tail base, rump, thighs	Chewing, scabs, restless skin, flea dirt
Mites	Patches on face, ears, elbows, chest, legs	Strong itch with scabies; mild to patchy loss with demodex
Environmental or food allergy	Broken coat on feet, belly, armpits, ears, face	Licking paws, ear trouble, repeat skin flares
Bacterial or yeast infection	Patchy thinning, greasy coat, red skin	Odor, crusts, dark skin, soreness
Ringworm	Round or uneven patches with scale	Can spread to people; more common in young dogs
Hypothyroidism	Thin coat on trunk and tail, dull fur	Weight gain, low drive, dry skin, repeat infections
Cushing’s disease	Thin hair over body, fragile skin	Pot belly, more drinking, more urination, panting

The Most Common Reasons A Labrador Starts Losing Fur

Fleas And Mites

Even one flea bite can set off a fierce reaction in a dog with flea allergy. Labs may chew the rump, tail base, and back legs until the coat looks moth-eaten. You may never spot a live flea because the dog grooms them off. Mange mites can do the same sort of damage. According to the Merck guide to mange in dogs, mites can trigger itching, inflammation, and hair loss, and some forms spread with ease.

If your Lab has patchy loss and fierce scratching, this sits near the top of the list. Vets may use skin scrapings, flea comb findings, or a treatment trial to sort it out.

Allergies

Labs are famous for skin trouble. The coat starts to thin because the dog is licking, chewing, and rubbing over and over. Feet, ears, belly, groin, and underarms are classic spots. Some dogs flare in one season. Others itch all year. Food can be part of it, though skin-triggering foods are less common than many owners think.

Allergies also open the door to skin infection. Once bacteria or yeast move in, the coat can fall apart fast. That’s why a dog may seem to have “dry skin and shedding,” when the real issue is itch plus infection.

Skin Infection

Bacterial folliculitis and yeast overgrowth can leave a Labrador with tufts of missing fur, pimples, crusts, greasy patches, or darkened skin. The hair may come out in little clumps. Some dogs smell yeasty or sour. Infection may start the trouble, or show up after scratching has already damaged the skin.

Skin tests help here. The right treatment depends on what is growing and how deep the infection runs.

Ringworm

Ringworm is a fungus, not a worm. It can cause circular hair loss, scale, and brittle hair shafts. It also matters because people can catch it. The Merck page on ringworm in dogs notes that the infection spreads through contact with infected animals or contaminated items such as grooming tools and bedding.

If anyone in the home has a new round rash and your dog has patchy coat loss, get it checked sooner rather than later.

Hormone Trouble

When the coat gets thin without much scratching, hormone disease moves up the list. Hypothyroidism can leave a Lab with a dull coat, thin hair on the trunk or tail, repeat ear or skin trouble, and weight gain. Cushing’s disease can thin the coat too, often with a pot-bellied look, extra thirst, and more trips outside.

These cases need blood work and a vet-led plan. Coat regrowth often takes time, even after treatment starts.

When Fur Loss Is More Than Normal Shedding

Shedding follows the grain of the whole coat. Pathologic fur loss leaves gaps. That’s the simple rule. If your Labrador’s skin is plain pink or lightly pigmented, with no scabs, no itch, and no bare patches, you may be dealing with a coat blow. If you see any of the signs below, think beyond shedding.

Sign You See	What It May Suggest	What To Do Next
Constant scratching or chewing	Parasites or allergy	Book a vet visit and avoid random skin products
Round bald patches	Ringworm or localized infection	Wash bedding and get testing
Greasy skin or bad odor	Yeast or bacterial overgrowth	Ask for skin cytology
Thin tail coat or body-wide thinning	Hormone disease	Ask about blood work
Red, raw, wet area	Hot spot or self-trauma	Prompt care is wise

What Your Vet Will Usually Check

A skin workup is often pretty direct. Your vet may start with flea combing, skin scrapings, tape prep, or cytology. That can pick up mites, bacteria, yeast, and clues from the skin surface. A fungal test may follow if ringworm is on the list. Blood tests come later when the pattern leans toward thyroid or Cushing’s disease.

Take photos before the visit. Snap the first spot you noticed, then the same spots every few days in good light. Bring a note with any new treats, food swaps, shampoos, boarding stays, or missed parasite control doses. That tiny bit of prep can save a lot of guesswork.

What Not To Do At Home

• Don’t keep switching foods every few days
• Don’t use harsh medicated products without a diagnosis
• Don’t assume one bath will solve itchy skin
• Don’t skip flea control because you haven’t seen fleas

When To Call Promptly

Book care soon if your Labrador has open sores, fast-spreading bald patches, ear trouble, fever, pain, foul smell, or skin that looks dark and thick. Also call sooner if the hair loss comes with extra thirst, weight change, low drive, or a swollen belly. Those signs point away from “just shedding.”

If the dog seems bright and the loss is mild, you still want a plan if it lasts more than a couple of weeks. Fur loss is easier to sort out early, before infection and self-trauma muddy the picture.

What Often Helps Once The Cause Is Found

Most Labradors regrow coat once the trigger is handled. Parasites need proper control. Allergies need itch control and skin repair. Infection needs the right medication, not guesswork. Hormone disease needs steady treatment and patience. The hair cycle is slow, so coat change often lags behind skin healing.

The main thing is this: a Labrador losing fur is not one single problem. It’s a skin signal. Read the pattern, get the right tests, and the coat usually tells a much better story a few weeks later.