The Food Standards Agency (FSA) is warning dog owners against giving their pets certain dog treats following alerts from the European Union (EU) about a potential connection to severe behavioural changes. The EU has raised concerns that these products may be associated with what’s being termed ‘werewolf syndrome’.
Symptoms observed include panic attacks, aggression, spasms, epileptic fits and in some instances, death. While there has been no confirmed distribution of these chews in the UK, nor any reported cases, vigilance is advised amid fears consumers may purchase the treats online.
Tina Potter, Head of Incidents at the Food Standards Agency, said: “While there is no confirmed distribution of affected products to the UK, there is the possibility that some consumers may have purchased these online from international sellers.
“No unsafe dog chews have been identified but, based on international investigations so far, we are advising dog owners to avoid feeding the affected chews to dogs as a precaution. There is no evidence to suggest these products present any risk to human health.”
Dog owners who have given the implicated chews to their pets are urged to cease immediately. If your dog appears unwell and has consumed any of the listed dog chews, it is crucial to seek veterinary advice and inform the vet about the specific foods and treats your dog has ingested.
(Image: FSA)
Vets are being urged to be vigilant for symptoms in dogs that come into their surgeries, particularly if they may be linked to the consumption of these chews, which have a long shelf life and could have been purchased several months ago, reports Wales Online.
Relevant symptoms include:
- sudden behavioural changes such as howling, crying, aggression
- epileptic-type seizures
If vets suspect cases associated with dog chews, they can report them through the Animal and Plant Health Agency’s (APHA) Small Animal Surveillance.
The treats included are:
Barkoo kaustange natur 29 cm
Packaging: bags of 570 grams (with 3 chewing bones)
Code on packaging (see photo): 1148655 MHD 04.2027 3200PF027
Barcode: 4260077047292
Barkoo kauknochen, geknotet natur 11cm
Packaging: bags of 150 grams (with 3 chewing bones)
Code on packaging (see photo): 1148592 MHD 07.2027 3200PF027
Barcode: 4260077046875
Barkoo Kauknochen geknotet 24cm
Packaging: bags of 150 grams (with 3 chewing bones)
Barcode: 4260077046899
Code on packaging (see photo): 1148657 MHD05.2027 3200PF027
Barkoo Kauknochen geknotet mit Spirulina 12cm
Packaging: bags of 180 grams (with 3 chewing bones)
Barcode: 4260077047261
Code on packaging (see photo): 1148654 MHD 06.2027 3200PF027
Chrisco Products:
Chrisco Tyggeruller med kylling, 10 stk
Item number: 12457
EAN code: 5764630124578
Use by dates: all dates
Chrisco Tyggeruller med kylling & kyllingelever, 100g
Product no. 12324
EAN code: 5764630123243
Use by dates: 01/12/2025; 05-01-2026; 15-03-2026; 18-03-2026; 15-04-2026; 20-04-2026; 01-06-2026; 15-07-2026
Chrisco Tyggeruller 18 stk. – hvide
Product no. 12468
EAN code: 5764630124684
Use by dates: 05/01/2027; 26-02-2027; 15-03-2027; 18-03-2027; 24-03-202
Chrisco Massive politistave, 2.stk. – brune
Product no. 12541
EAN code: 5764630125414
Use by dates: 26/02/2027; 15-04-2027
Chrisco Massive politistave, 2stk. – hvide
Product no. 12542
EAN code: 5764630125421
Use by dates: 05/01/2027; 20-04-2027; 01-06-2027
Chrisco Tyggerulle m. kylling & kyllingelever, 1stk
Product no. 12624
EAN code: 5764630126244
Use by dates: 01/12/2025; 05-01-2026; 15-03-2026; 18-08-2026
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