Pet sterilization laws raising health concerns

As legislators push for more mandatory spay and neuter laws for pets as young as 4 and 6 months in hopes of reducing the number of unwanted animals, critics are crying foul over research showing that such surgeries may raise certain health risks in dogs and therefore shouldn't be required.

Margaret V. Root Kustritz, a veterinary reproduction specialist at the University of Minnesota, reviewed 200 studies and found that while spay/neuter surgery has benefits, it is also linked to increases in the incidence of certain diseases and conditions such as bone cancer, heart tumors, hypothyroidism and canine cruciate ligament (CCL) injuries, as well as prostate cancer in male dogs and urinary incontinence in females. The extent of the risk can depend on the problem, as well as the size and sex of the dog, and the age the surgery is performed.

The risk of a type of cardiac tumor called hemangiosarcoma is five times higher in spayed female dogs than unspayed females, noted Kustritz. And neutered males have 2.4 times the risk of unneutered males. The risk was also higher for osteosarcoma (bone cancer): Dogs spayed or neutered before age 1 were up to two times as likely to develop the disease than those that hadn’t been altered.

Full article URL: http://www.msnbc.msn.com/id/24597888/

By Kim Campbell Thornton

LEPTOSPIRA VACCINE -- Adverse Reactions

LEPTOSPIRA VACCINE--Adverse Reactions

Published by Kris Christine

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A tail-wagging discovery

There is a newly discovered, feature of dog body language that may surprise attentive pet owners and experts in canine behavior. When dogs feel fundamentally positive about something or someone, their tails wag more to the right side of their rumps. When they have negative feelings, their tail wagging is biased to the left.

A study describing the phenomenon, "Asymmetric tail-wagging responses by dogs to different emotive stimuli," appeared in the March 20 issue of Current Biology. The authors are Giorgio Vallortigara, a neuroscientist at the University of Trieste in Italy, and two veterinarians, Angelo Quaranta and Marcello Siniscalchi, at the University of Bari, also in Italy.

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