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Environmental contaminants negatively effect cat health
Researchers found a significant negative correlation between thyroid hormones and organohalogen compounds.
Study discovers negative effects of OHCs on pet cats.

A study led by researchers from Ehime University, Japan, has evaluated the effects of environmental contaminants on pet cat health, as reported by Science Daily.

Researchers investigated the potential health effects caused by persistent organic pollutants exposure in pet cats, finding that this can lower blood thyroid hormone levels and cause chronic oxidative stress.

These organic pollutants, known as organohalogen compounds (OHCs), are human-made chemicals containing chlorine, bromine and fluorine atoms. These are found in some pharmaceuticals, industrial fluids, electrical applications, paint additives, food packaging and many pesticides.

With the close contact pet cats share with human environments, the potential health effects of harmful substances on them is something scientists are concerned with. 

For this study, researchers collected blood from pet cats and analysed their contamination status – finding that a high level of exposure to OHCs correlated significantly with the thyroid hormone homeostasis, chronic oxidative stress and metabolic diseases.

Those researching the effects of these environmental contaminants on pet cat health have concluded that providing companion animals with an environment featuring low exposure to OHCs is an important factor in considering pet welfare. With reducing the OHC contained in the pet's indoor environment and pet food considered a 'necessity'. 

As stated in the Science Daily report, is: “it is essential to clarify the toxic effects of various pollutants on pet cats.” 

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Equine Disease Surveillance report released for Q4 2025

News Story 1
 The latest Equine Disease Surveillance report has been released, with details on equine disease from Q4 of 2025.

The report, produced by Equine Infectious Disease Surveillance, includes advice on rule changes for equine influenza vaccination.

Statistics and maps detail recent outbreaks of equine herpes virus, equine influenza, equine strangles and equine grass sickness. A series of laboratory reports provides data on virology, bacteriology, parasitology and toxicosis.

This issue also features a case study of orthoflavivus-associated neurological disease in a horse in the UK. 

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News Shorts
RCVS annual renewal fee for vets due

RCVS' annual renewal fee for veterinary surgeons is now due. Vets must pay their renewal fee before Wednesday, 1 April 2026.

This year's standard annual fee has increased to 431 from last year's 418. This is an approximately three per cent increase, as approved by RCVS Council and the Privy Council.

Tshidi Gardner, RCVS treasurer, said: "The small fee increase will be used to help deliver both our everyday activities and our new ambitious Strategic Plan, which includes aims such as achieving new legislation, reviewing the Codes of Professional Conduct and supporting guidance, and continuing to support the professions through activities such as the Mind Matters Initiative, RCVS Academy and career development."

A full breakdown of the new fees is on the RCVS website. Information about tax relief is available on the UK government website.