---
title: "Dog Shark Costume — $31K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/pet-supplies/dog-shark-costume"
last_updated: "2026-07-21T17:40:16.606Z"
locale: en
meta:
description: "Niche score 48/100 · $31K/yr market · 140K searches/yr · $18.67 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 48/100 · $31K/yr market · 140K searches/yr · $18.67 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Dog Shark Costume — $31K/yr Amazon US Niche (2026) - Flapen"
---
# **dog shark costume**
**Skip it**
High returns (11.8%) — this niche doesn't clear our bar today.
Market size 8Growth 69Conversion 15Competition 60Returns 1Price range 80Avg price 84Brand share 59Review moat 74Quality gap 81
**Avg price**
**Great****$18.67**
avg listing price — sweet spot $15–$100
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Price range**
**Great****$6.73–$52.18**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Good****528.73**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Good****+50.2%**
90-day search growth — must beat 0% to launch
**Competition**
**Good****49%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Good****69%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Bad****1.2%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****$31K**
$31K/yr · 140K searches
**Returns**
**Bad****11.8%**
return rate — above 6% kills the launch gate
According to Flapen's Amazon United States niche tracking, dog shark costume is a $31K/yr Amazon United States market (140K searches/yr). The top 5 brands hold 69% of demand. Demand peaks in Sep–Oct–Nov. Verdict: Skip it — 48/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **dog shark costume market data**
- **Units sold / yr**
- **2K–3K**
- avg 0–100/product
- **Revenue / yr**
- **$37K–$47K**
- units × avg price
- **Launch success**
- **0%**
- 0 of 6 new (360d)
- **Conversion rate**
- **1.2%**
- **Avg BSR**
- **#965**
- **Page quality**
- **0%**
- **Prime**
- **94%**
- **Sponsored**
- **64%**
- **Out of stock**
- **7.7%**
- **Avg brand age**
- **44 months**
- **Avg seller age**
- **204 days**
## **Competition & brand share**
The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**18 **▲rising
**Sellers**
**46**
**Top-5 brand share**
**69%**
Top 20: 100%
**Top-5 click share**
**49%**
Top 20: 87%
**Open market**
**27%**
- Rubies25% - Puluole15% - Mogoko13% - California Costumes10% - PET KREWE UNLEASH THE PARADE6% - Zoo Snoods4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +50.2% search growth over the last 90 days.
20K15KSpike '24Holiday '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Oct, Nov · busiest ÷ quietest = 28.9×
[**Open Trend **](https://flapen.com/research/us/pet-supplies/dog-shark-costume/trend)
## **Top dog shark costume search terms**
- **dog shark costume**42K/yr+40.8%1.0% conv. - **shark dog costume**35K/yr+8.8%1.3% conv. - **shark costume for dog**22K/yr+40.1%0.8% conv. - **dog shark fin**9K/yr+196.9%1.1% conv. - **shark fin for dog**5K/yr+130.1%1.6% conv. - **shark costume for dogs**4K/yr+148.1%0.3% conv. - **shark costume dog**5K/yr+53.7%1.3% conv. - **dog costume shark**5K/yr+46.4%0.6% conv. - **dog shark costume large**4K/yr+179.0%1.9% conv. - **dog shark costume xl**7K/yr-9.1%2.2% conv. [**All search terms **](https://flapen.com/research/us/pet-supplies/dog-shark-costume/search-terms)
## **Top dog shark costume 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.
0%4%$1K8%$2K12%$4K16%$5K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 33 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Rubies Shark Fin Pet Costume for Dogs or Cats S/M**Rubies**$10.74**3.7★744 rev](https://www.amazon.com/dp/B00WBBEP0C) [2**California Costumes The Great White Bark Costume Large for Small/Medium Sized Dogs**California Costumes**$23.20**3.8★10 rev](https://www.amazon.com/dp/B0CHXV7DPK) [3**Rubies Shark Fin Pet Costume for Dogs or Cats M/L**Rubies**$12.68**3.7★744 rev](https://www.amazon.com/dp/B00WBBEP70) [4**Shark Dogs Costume for Winter Small and Medium-Sized Shark Dog Jacket Sharks Dog Vest for Cold Weather Fleece Puppy Hoodie Sharks Pet Costume for Cat and Dogs(S)**Puluole**$12.98**3.7★21 rev](https://www.amazon.com/dp/B0FKBM46S8) [5**Mogoko Funny Dog Cat Shark Costumes Pet Halloween Christmas Cosplay Dress Adorable Blue Shark Pet Costume Animal Fleece Hoodie Warm Outfits Clothes (L Size)**Mogoko**$17.31**4.3★2,589 rev](https://www.amazon.com/dp/B01MAVZU2D)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**NACOCO Halloween Shark Dog Costume - Pet Christmas New Year Hoodie Warm Party Coat Outfit for Small and Medium Cat Dog Clothes(Blue Shark M)**NACOCO**$20.71**188 rev11mo ago](https://www.amazon.com/dp/B0FKMM4MQ4) [**NACOCO Halloween Shark Dog Costume - Pet Christmas New Year Hoodie Warm Party Coat Outfit for Small and Medium Cat Dog Clothes(Blue Shark L)**NACOCO**$21.05**188 rev11mo ago](https://www.amazon.com/dp/B0FKMSN32X) [**Shark Dogs Costume for Winter Small and Medium-Sized Shark Dog Jacket Sharks Dog Vest for Cold Weather Fleece Puppy Hoodie Sharks Pet Costume for Cat and Dogs(S)**Puluole**$12.98**21 rev11mo ago](https://www.amazon.com/dp/B0FKBM46S8) [**Shark Dogs Costume for Winter Small and Medium-Sized Shark Dog Jacket Sharks Dog Vest for Cold Weather Fleece Puppy Hoodie Sharks Pet Costume for Cat and Dogs(XS)**Puluole**$13.05**21 rev11mo ago](https://www.amazon.com/dp/B0FKBKLD9Z) [**Shark Dogs Costume for Winter Small and Medium-Sized Shark Dog Jacket Sharks Dog Vest for Cold Weather Fleece Puppy Hoodie Sharks Pet Costume for Cat and Dogs(L)**Puluole**$12.65**21 rev11mo ago](https://www.amazon.com/dp/B0FKBFDRJZ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Fragralley Shark Dog Life Jacket Adjustable Dog Life Vest with Shark Fin Suit for Small Medium Large Dog Life Vest for Swimming and Boating**Fragralley**$26.59**4.6★**▲ 575%**](https://www.amazon.com/dp/B09Q553W6M) [**Fragralley Shark Dog Life Jacket Adjustable Dog Life Vest with Shark Fin Suit for Small Medium Large Dog Life Vest for Swimming and Boating**Fragralley**$20.26**4.6★**▲ 364%**](https://www.amazon.com/dp/B09Q61SD36) [**ARUNNERS Large Dog Costume Hoodie Shark 7XL**ARUNNERS**$52.18**5.0★**▲ 361%**](https://www.amazon.com/dp/B0CFQXV21Z) [**Zoo Snoods Blue Shark Costume - Warm Knit Dog Snood Wrap for Pets Neck Ear Cover Protection Halloween Winter (Medium)**Zoo Snoods**$25.18**4.7★**▲ 252%**](https://www.amazon.com/dp/B0922471HK) [**Bess Bridal Dog Life Jacket - Shark Life Vest for Swimming Boating - Reflective Lifejacket Swimsuit for Small Medium Large Dogs - High Buoyancy Lifesaver Preserver with Rescue Handle Grey Shark M**Bess Bridal**$22.67**4.6★**▲ 217%**](https://www.amazon.com/dp/B07B6LLNP9)
**~~View all trending →~~**
## **What buyers say about dog shark costume**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**27%
*“It fits great”*
**Quality-Overall**20%
*“Seemed well made”*
**Soft Feel**14%
*“Super cute and soft,”*
**Comfort-Overall**12%
*“comfortable”*
**Durability**5%
*“Lasted through several trick or treats”*
**Grip**3%
*“it didnt slide around”*
**Color**3%
*“Many colors and sizes”*
**Strap/String Quality**3%
*“Straps fit her well”*
**Material Quality**2%
*“The material is thick and sturdy and feels like it is made to last”*
**Ease Of Use**2%
*“it is easy to get on an off”*
### **What buyers complain about **
**Size-Overall**75%
*“Runs small”*
### **Top return reasons **
**Size-Overall**86%
**Advertised Vs Actual Product**3%
**Strap/String Quality**2%
**Shoulder Fit**2%
**Arm Fit**1%
**Value For Money**1%
**Functionality-Overall**1%
**Quality-Overall**1%
**Material Quality**1%
**Defective Material/Parts**1%
## **Common questions**
- **Is dog shark costume profitable to sell on Amazon United States?**
- The niche generates $31K/yr across 33 tracked products. 0 of 6 products launched in the last 360 days are still selling. 90-day search growth is +50.2%. Flapen's verdict: Skip it (48/100).
- **How competitive is the dog shark costume niche?**
- 18 brands and 46 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 69% of demand.
- **What do buyers complain about in dog shark costume?**
- Top complaints mined from reviews: Size-Overall. The return rate is 11.8% — above our launch gate.
- **When does demand for dog shark costume peak?**
- Demand peaks in Sep–Oct–Nov; the busiest month runs 28.9× the quietest.
- **What does it cost to enter the dog shark costume niche?**
- Listings span $6.73–$52.18; the average listing price is $18.67 (sweet spot $15–$100). The average incumbent carries 529 reviews — the moat a new listing must climb.
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