The Food Standards Agency (FSA) is advising dog owners not to feed their pets a list of dog treats from China following concerns from the European Union (EU) of a possible link to serious behavioural changes. Reports from the EU suggest that these products are potentially linked to dogs experiencing what is known as ‘werewolf syndrome’.
Symptoms include panic attacks, aggression, spasms, epileptic fits and in some cases death. There is no confirmed distribution of the chews to the UK and no cases have been detected in the UK.
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.”
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If you have fed the affected chews to your dog, stop doing so immediately. If your dog is unwell and has been fed any of the dog chews listed, you should seek veterinary advice and provide detailed information to the vet about the foods and treats your dog has been fed.
Vets should be alert to symptoms in dogs presenting at their surgeries and whether they may be associated with the consumption of the chews, which have a long shelf life and may have been bought several months ago.
Relevant symptoms include:
If vets suspect cases associated with dog chews, they can report them through the Animal and Plant Health Agency’s (APHA) Small Animal Surveillance.
One of the Barkoo treats included in the warning -Credit:FSA
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