DEAR DR. FOX: I appreciate all your warnings about anti-flea and -tick insecticides in pet collars posing health risks to dogs and cats, and to any family members who pet them.... more

DEAR DR. FOX: I met veterinarian Crystal Heath at two recent conferences. She’s quite the hero for animals, and her organization (OurHonor.org) represents a new generation of vets taking a stand. She ... more

DEAR READERS: The Greek philosopher Plato asserted in "The Republic": “Democracy is a charming form of government, full of variety and disorder, and dispensing a sort of equality to equals and unequal... more

DEAR READERS: Millions of people spend hours at a time on computers, some working on them all day. Like all electronic devices, computers create electromagnetic fields and non-ionizing radiation, and ... more

DEAR READERS: I receive reports from around the world every day on issues about animal health and behavior, environmental concerns and related public health issues. Here are just a few:... more

DEAR DR. FOX: I read your columns about the environment and climate change. As the mother of two preteen children, how might I best explain what is going on and why? I think the more they understand, ... more

DEAR READERS: In wishing you a happy New Year, it is a good time to look back and see where our past choices have taken us.... more

DEAR DR.FOX. I was delighted to read your “Perpetual War or Metamorphosis?” column in the paper. It’s not every day I see a piece as visionary and forward-thinking as this. Thanks for advancing a long... more

DEAR READERS: Anyone who still consumes bacon, pork or other pig products needs to think twice, especially if they have, and love, a dog or cat -- whose emotional intelligence is equivalent to a pig’s... more

DEAR READERS: We are becoming mindful of our collective carbon footprint and greenhouse gas emissions, but as society moves to increasing dependence on technology for data storage, as well as the deve... more

DEAR READERS: This Animal Doctor column covers some human health and well-being issues, especially those affecting children, because humans are animals, too. One important such topic is children's use... more

DEAR READERS: Salmon have been spotted in upstream tributaries of the Klamath River at the California-Oregon border just two months after hydroelectric dams were removed, allowing the river to follow ... more

DEAR READERS: The United States has just voted into office a president who has called climate change “a big hoax.” Researchers and activists across the world have reacted with dismay and anger.... more