Is dog shampoo gallon profitable to sell on Amazon United States?

The niche generates $665K/yr across 49 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -2.2%. Flapen's verdict: Worth a look (61/100).

How competitive is the dog shampoo gallon niche?

19 brands and 49 sellers compete. The top 5 products take 36% of clicks and top 5 brands hold 77% of demand.

What do buyers complain about in dog shampoo gallon?

Top complaints mined from reviews: Smell, Size-Overall, Allergies. The return rate is 0.5%.

When does demand for dog shampoo gallon peak?

Demand peaks in Jun; the busiest month runs 1.6× the quietest.

What does it cost to enter the dog shampoo gallon niche?

Listings span $10.01–$58.23; the average listing price is $36.16 (sweet spot $15–$100). The average incumbent carries 2,811 reviews — the moat a new listing must climb.

dog shampoo gallon

Worth a look

Shows low returns (0.5%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.5%

return rate — above 6% kills the launch gate

Avg price

Incredible$36.16

avg listing price — sweet spot $15–$100

Price range

Great$10.01–$58.23

cheapest to priciest tracked listing — scored on the share inside $15–$100

Competition

Great36%

top-5 click share — an open shelf

Conversion

Great7.4%

search→purchase rate — share of searches ending in a sale

Market size

Good$665K

$665K/yr · 247K searches

Brand share

Okay77%

top-5 brand share — brands hold most of the demand

Review moat

Okay2,811.47

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-2.2%

90-day search growth — must beat 0% to launch

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

According to Flapen's Amazon United States niche tracking, dog shampoo gallon is a $665K/yr Amazon United States market (247K searches/yr). The top 5 brands hold 77% of demand. Demand peaks in Jun. Verdict: Worth a look — 61/100.

Data updated Jul 16, 2026 · scored weekly · How we score niches

dog shampoo gallon market data

Units sold / yr: 15K–20K; avg 100–250/product
Revenue / yr: $542K–$723K; units × avg price
Launch success: —; 2 of 2 new (360d)
Conversion rate: 7.4%
Avg BSR: #153
Page quality: 0%
Prime: 96%
Sponsored: 88%
Out of stock: 0.2%
Avg brand age: 94 months
Avg seller age: 151 days

Competition & brand share

Clicks spread well past the top 5 (36% combined) — an open shelf where new products get seen.

Brands

19 falling

Sellers

Top-5 brand share

77%

Top 20: 100%

Top-5 click share

36%

Top 20: 74%

Open market

20%

Bark2Basics35%
Wahl18%
Top Performance15%
PetAg5%
MPP3%
GreenGroom3%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -2.2% search growth over the last 90 days.

Peak months: Jun · busiest ÷ quietest = 1.6×

Open Trend

Top dog shampoo gallon search terms

dog shampoo gallon45K/yr +0.9%5.5% conv.
professional dog shampoo26K/yr +2.3%2.0% conv.
gallon dog shampoo26K/yr -9.4%4.6% conv.
dog grooming shampoo24K/yr -4.4%2.5% conv.
bark2basics dog shampoo22K/yr -4.7%5.3% conv.
fresh pet shampoo16K/yr -3.0%8.9% conv.
bark 2 basics dog shampoo10K/yr -0.0%6.8% conv.
bark to basics dog shampoo9K/yr +3.1%7.4% conv.
bark2basics9K/yr -21.8%2.7% conv.
dog shampoo gallon size8K/yr -3.5%5.3% conv.

All search terms

Top dog shampoo gallon products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 49 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Wahl USA Dry Skin & Itch Relief Pet Shampoo for Dogs Oatmeal Formula with Coconut Lime Verbena Scent - 64 Oz - Model 821004-050

Wahl$18.154.6★42,945 rev

Top Performance Fresh Pet Shampoo 1-Gallon Black

Top Performance$37.004.7★1,459 rev

Wahl USA 4-in-1 Calming Pet Shampoo for Dogs with a Lavender Chamomile Scent Cleans Conditions Detangles & Moisturizes - Pet Friendly Formula 64 Oz - Model 821000-050

Wahl$19.824.7★34,475 rev

Bark2Basics Wild Berry Dog Shampoo 1 Gallon | Unique Herbal Blend Finest Natural Ingredients Handcrafted Soap-Free & Cruelty-Free Protects and Nourishes Skin and Coat

Bark2Basics$41.844.5★1,023 rev

PetAg Fresh n Clean Scented Shampoo Classic Fresh Scent - 1 Gallon - Moisturizes with Vitamin E & Aloe Vera - Strengthens & Repairs Coats - Soap Free

PetAg$39.194.8★1,567 rev

Newest

by launch date

Crystalino Dog Shampoo Conditioner - Lavender - (1 Gallon) Pet Shampoos for Dogs Oatmeal Dog & Puppy Shampoo Sensitive Skin and Itchy Skin Relief Bath Supplies for Dogs Wash Moisturizing for Pets

Crystalino$24.2351 rev

5mo ago

Crystalino Oatmeal Shampoo for Dogs - 1 Gallon Dog Shampoo Champu para Perros & Conditioner Concentrate Professional Grooming - 1 Gallon Sensitive Hypoallergenic Dogs Shampoos Oatmeal Puppy Shampoos

Crystalino$23.8951 rev

8mo ago

Fresh Pet Dog Cat Shampoo and Conditioner Pairs Reduces Mats Tangles Adds Sheen Two Bottle Combos for Less (17 Ounce Bottle Pair)

PUREPET$39.849 rev

1y ago

MPP Dog Grooming Pro Fresh Pet Shampoo Conditioner Cologne Mist or Waterless Shampoo (17 oz)

MPP$23.7988 rev

3y ago

Bark2Basics DeShedding Dog Shampoo 1 Gallon - Combats and Reduces Shedding Removes Undercoat Fights Excessive Hair Shed Omega 3 and 6 Rich Strengthens the Hair Follicle Natural USA Made

Bark2Basics$46.98307 rev

3y ago

What buyers say about dog shampoo gallon

What buyers praise and complain about, mined from review topics.

What buyers love

Smell60%

“Scent is light”

Soft Feel6%

“Gentle on sensitive skin”

Quality-Overall6%

“Great quality grooming product for regular use”

Ease Of Cleaning4%

“Cleans well”

Value For Money3%

“worth every penny”

Allergies3%

“No allergies to it”

Pet Friendly2%

“Good dog shampoo”

Brightness/Shine/Glow2%

“hair just shines”

Advertised Vs Actual Product1%

“As advertised”

Moist/Dry1%

“Great for dry skin”

What buyers complain about

Smell30%

“They said it was gross smelling”

Size-Overall7%

“The bottle was smaller than I anticipated”

Allergies6%

“Made my dog itch”

Leak-Proof6%

“The package was leaking”

Value For Money4%

“way over priced for what you get”

Ease Of Cleaning3%

“does not clean well at all”

Quality-Overall3%

“Top of line quality is an exaggeration”

Moist/Dry3%

“The box was totally dry that it was delivered in”

Advertised Vs Actual Product1%

“Photos don't do it justice”

Functionality-Overall1%

“This does not work”

Top return reasons

Leak-Proof34%

Smell27%

Size-Overall12%

Advertised Vs Actual Product7%

Value For Money7%

Functionality-Overall3%

Defective Material/Parts2%

Moist/Dry2%

Ingredients-Overall1%

Product Condition1%

Common questions

Is dog shampoo gallon profitable to sell on Amazon United States?: The niche generates $665K/yr across 49 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -2.2%. Flapen's verdict: Worth a look (61/100).
How competitive is the dog shampoo gallon niche?: 19 brands and 49 sellers compete. The top 5 products take 36% of clicks and top 5 brands hold 77% of demand.
What do buyers complain about in dog shampoo gallon?: Top complaints mined from reviews: Smell, Size-Overall, Allergies. The return rate is 0.5%.
When does demand for dog shampoo gallon peak?: Demand peaks in Jun; the busiest month runs 1.6× the quietest.
What does it cost to enter the dog shampoo gallon niche?: Listings span $10.01–$58.23; the average listing price is $36.16 (sweet spot $15–$100). The average incumbent carries 2,811 reviews — the moat a new listing must climb.