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Probiotics could reduce weight of obese dogs, study finds
Enterococcus faecium IDCC 2102 and Bifidobacterium lactis IDCC 4301 supported dogs in reducing their body fat.
Study reveals older dogs lack helpful bacteria species.

A new study has found probiotics that could support dogs' weight loss, after identifying a lack of the helpful bacteria in older dogs.

The researchers, from the College of Agriculture and Life Science (CALS) in Seoul, found that administering Enterococcus faecium IDCC 2102 and Bifidobacterium lactis IDCC 4301 supported dogs in reducing their body fat.

The discovery was made as part of the research group’s goal to find probiotics suitable for the long-term and safe treatment of metabolic conditions. They opted to investigate their impact on obesity in dogs, a condition they say affects 50 per cent of the pet population, particularly older dogs.

To identify which probiotics to investigate, the team studied the variations of intestinal microbiota in young and old dogs.

This revealed that older dogs had had a decline in their populations of lactic acid bacteria, namely Bifidobacterium and Enterococcus species. This directed them to focus on these specific strains.

The team experimented with administering Enterococcus faecium IDCC 2102 and Bifidobacterium lactis IDCC 4301, accompanied by a high fat diet, to a group of beagles.

The results of this experiment revealed that these strains were effective in reducing the dogs’ body fat, as well as adjusting the imbalances of intestinal bacteria caused by obesity. Even with the dogs’ high calorie diet, the strains were able to limit dietary intake, enhance excretion, and efficiently activate energy metabolism.

Furthermore, the probiotics proved beneficial for tackling systemic inflammation and disrupted hormone metabolism, which is often caused by fat accumulation.

The group which ingested the strains were found to have lowered inflammation levels and enhanced metabolic activities. They also had an increased proportion of commensal bacteria, which contributes to immunity against harmful bacteria

These changes were found to persist in the dog’s body, with the positive alterations sustaining over time.

Younghoon Kim, the study lead and a professor in the Department of Agricultural Biotechnology at CALS, said: "While types of probiotics suitable for human consumption or commercial livestock have been identified and established, the absence of standardized guidelines for companion animals is a glaring gap.

"Our study aimed to address this deficiency by striving to broaden the spectrum of probiotics applicable to pets across various environments."

The full study can be found in the journal Microbiology Spectrum.

Image © Shutterstock

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Greyhound Board announces change to vaccination guidance

News Story 1
 The Greyhound Board of Great Britain has published new vaccination guidance, with all greyhounds registered from 1 January, 2027 required to have the L4 leptospirosis vaccination, rather than L2.

The change comes in response to the reduced availability of the 'L2' Leptospirosis vaccine across the UK, and aims to support best biosecurity practice across the racing greyhound population.

GBGB veterinary director Simon Gower, said "While rare, Leptospirosis is a serious infectious disease that can affect both dogs and humans, so it is vital that we offer our greyhounds the broadest possible protection.  

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Nominations open for RCVS and VN Council elections

The nomination period for the 2026 RCVS Council and VN Council elections is now open, with three veterinary surgeon seats and two veterinary nurse seats available.

Prospective candidates can download an information pack and nomination form from the RCVS website. Individuals can nominate themselves for the elections, with the results to be announced in the spring.

Clare Paget, the recently appointed RCVS Registrar and elections returning officer, said: "If you want to play your part in influencing and moulding how the professions are regulated, and making key decisions on matters of great importance to your peers, the public and animal health and welfare, please consider standing for RCVS Council or VN Council next year."

Nominations close at 5pm on Saturday, 31 January 2026.