By using this site, you agree to the Privacy Policy and Terms of Use.
Accept

Need To Know

News, culture and entertainment you need to know

Font ResizerAa
  • U.K News
  • World
  • Entertainment
  • Lifestyle
  • Money
  • Travel
  • Fitness and health
  • Tech
  • Motors
  • Sports
  • More
Reading: Warning as common chew toy alleged to give dogs ‘werewolf syndrome’ – with 13 canines dead
Share
Font ResizerAa

Need To Know

News, culture and entertainment you need to know

  • U.K News
  • World
  • Entertainment
  • Lifestyle
  • Money
  • Travel
  • Fitness and health
  • Tech
  • Motors
  • Sports
  • More
Search
  • U.K News
  • World
  • Entertainment
  • Lifestyle
  • Money
  • Travel
  • Fitness and health
  • Tech
  • Motors
  • Sports
  • More
Follow US
Need To Know > News > Animals > Warning as common chew toy alleged to give dogs ‘werewolf syndrome’ – with 13 canines dead
Pet owners warned after Barkoo chew toys linked to ‘werewolf syndrome,’ causing neurological issues in dogs, with 15 fatalities reported across multiple countries.
NewsAnimals

Warning as common chew toy alleged to give dogs ‘werewolf syndrome’ – with 13 canines dead

Katie Dollard
Last updated: January 9, 2025 5:05 pm
Katie Dollard Published January 9, 2025
Share
One of the Barkoo chew bones. (Picture: Jam Press)
SHARE

Pet owners have been warned after a common chew toy is alleged to have caused ‘werewolf syndrome’.

Nearly 50 dogs have fallen seriously ill – of which 15 have died at the time of writing – with cases reported in several countries.

A Dutch health authority has warned that the product, which can be purchased online, can cause the sickness.

READ MORE: Beloved dog who almost drowned in sea reunited with hero lifeboat crew who gave her kiss of life

The so-called ‘werewolf syndrome’ is often illustrated by panic attacks, extreme amounts of energy, aggression and canines howling like a wolf, as reported by Need To Know.

Pet owners warned after Barkoo chew toys linked to ‘werewolf syndrome,’ causing neurological issues in dogs, with 15 fatalities reported across multiple countries.
A stock image of a dog. (Picture: Jam Press)

Several dog owners who claim to have purchased the Barkoo chew toy online say the neurological symptoms appeared soon after use.

In one case, in Groningen, Netherlands, one dog reportedly died while its brother was taken to a veterinary hospital.

Vets claimed that the toy item was to blame.

The Netherlands Food and Consumer Product Safety Authority, NVWA, has now issued an official warning for Barkoo chew bones, which is sold by websites such as Zooplus and Bitiba.

Pet owners warned after Barkoo chew toys linked to ‘werewolf syndrome,’ causing neurological issues in dogs, with 15 fatalities reported across multiple countries.
Information on the packaging of the Barkoo chew bones. (Picture: Jam Press)

“These chew bones are the suspected cause of the development of serious neurological abnormalities in dogs,” they announced in a statement.

“This is currently still being investigated.

“These neurological abnormalities are also described as werewolf syndrome.

“This syndrome can lead to death.”

Nina Meyerhoff, a veterinarian in Hanover, told the German magazine GMX: “It seems as if the dogs are hallucinating.

Pet owners warned after Barkoo chew toys linked to ‘werewolf syndrome,’ causing neurological issues in dogs, with 15 fatalities reported across multiple countries.
Information on the packaging of the Barkoo chew bones. (Picture: Jam Press)

“Some try to jump out of the window or suddenly become aggressive.”

Cases have also been reported in Switzerland, Finland and Belgium.

Jam Press has contacted Barkoo, Zooplus and Bitiba for comment.

READ MORE: Pregnant snake spills dozens of baby anacondas onto road after being run over

You Might Also Like

Student halls burst into flames at £274m site as workers evacuated

OnlyFans star whose squirrel caught JD Vance’s eye faces deportation

Shelves STRIPPED BARE as swarm of youths storm shop in ‘giveaway promo’ gone wrong

Fundraiser for ‘full of fun’ Brit 42 killed in holiday motorbike crash

Father 32 and daughter five found dead after horror 25m waterfall plunge

TAGGED:animalsDogsHorrorNetherlandsshockingworld news
Share This Article
Facebook Twitter Email Print
What do you think?
Love0
Sad0
Happy0
Sleepy0
Angry0
Dead1
Wink0
Leave a comment Leave a comment

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Follow US

Find US on Social Medias
FacebookLike
TwitterFollow
InstagramFollow
TiktokFollow
Most read
Celebrities

Lana Rhoades says she had ‘little say’ over porn filming partners – now her AI digital twin is taking over

Joseph Vaughan Joseph Vaughan November 12, 2026
Idiot drivers crash into each other despite having entire car park to themselves
Tragedy as woman 43 dies after falling and smashing head during gym workout
Woman blasted with RAW SEWAGE after riding over and bursting pipe
Biker survives RAMPAGING elephant trampling his chest TWICE

Categories

  • Lifestyle
  • U.K News
  • World
  • Technology
  • Business
Quick Link
  • My Bookmark
  • Interests
  • Privacy
  • Terms
  • Write for us
  • Authors
  • Contact
Top Categories
  • Business
  • Environment
  • Lifestyle
  • Technology
  • Fitness and health
  • Property
  • Entertainment

Subscribe US

Subscribe to our newsletter to get our newest articles instantly!

Read Next

Player in striped kit kicks a fallen footballer's head, circled in red, with a brawl breaking out on a dusty pitch.
World

Footballer in hospital after being booted in HEAD by sent-off rival

November 12, 2026
Bearded man in a red-and-black cap and checked shirt, and a man in a navy hat hugging a white dog on a hillside.
World

Graffiti artist 43 vanishes after catching taxi on first night of holiday

November 12, 2026
Forget chocolate - Tommee Tippee's first-ever advent calendar counts down the last 12 weeks of pregnancy, packing over £260 of gifts for mums-to-be into one £29.99 box.
U.K News

Advent calendar for expectant mums swaps chocolate for £260 of pampering gifts – but it costs just £29.99

November 12, 2026
Woman on the bonnet of a dark red car on a pavement, and the same car crashed with its front inside a shop.
World

Driver 80 hits pedestrians and crashes into shop leaving one seriously hurt

November 12, 2026
An animal rights activist has been filmed striking a horse-drawn carriage driver in the face and shoulder with a skateboard during a heated row in New York.
World

Animal rights activist 27 strikes man in FACE with SKATEBOARD over alleged ‘abuse’

November 12, 2026
Côte reveals its Christmas 2026 menu by ex-Gordon Ramsay chef Steve Allen, with a £99.95 five-course Christmas Day feast and festive meal boxes for anyone hosting at home.
U.K News

Festive £99.95 Christmas Day feast created by Gordon Ramsay’s former chef unveiled – plus pigs in blanket breakfast sandwich

November 12, 2026
Laura Bishop speaking in an interview, beside a black and white police mugshot of Daniel Bishop with grey hair
U.K News

My husband drugged me with GHB and invited men to rape me

November 12, 2026
Are LED face masks worth the hype? I tested Silk'n's £220 LED Face Mask Pro for months - here's what happened to my skin and what an expert says about getting results.
Lifestyle

I tried a £265 LED face mask for months – my friends said I looked ‘insane’ but I’ve had so many compliments on my skin

November 12, 2026

Categories

  • Lifestyle
  • U.K News
  • World
  • Technology
  • Business
Quick Link
  • My Bookmark
  • Interests
  • Privacy
  • Terms
  • Write for us
  • Authors
  • Contact
Top Categories
  • Business
  • Environment
  • Lifestyle
  • Technology
  • Fitness and health
  • Property
  • Entertainment

Subscribe US

Subscribe to our newsletter to get our newest articles instantly!

2024 © Need To Know. All Rights Reserved.
Welcome Back!

Sign in to your account

Lost your password?