One Earth, One Health

Dedicated to advancing the understanding and appreciation of other animals, improving their health and well-being and our relationships with them and the natural world.


Welcome all animal lovers, owners, trainers, breeders, care-providers, and students of animal care, health, welfare and bioethics to my website. I am a veterinarian, graduating from the Royal Veterinary College, London, England in 1962. I did post-graduate research on animal behavior and development in the US, where I now reside, earning a PhD in medicine, and a DSc in ethology/animal behavior from the University of London. I am a member of the British Veterinary Association, the American Holistic Veterinary Medical Association and an Honor Roll member of the American Veterinary Medical Association.

Animal Doctor Column

I have been writing the syndicated newspaper column “Animal Doctor” for over 40 years and this has given me a wide-angle view of the health and behavioral issues affecting companion animals.

Deanna Krantz

My wife, Deanna Krantz, has turned her love of animals and respect for life into direct action in India. She founded and directed India Project for Animals & Nature (IPAN) to indirectly help the indigenous village and tribal peoples by improving the health and well-being of their farmed animals and of the dogs and cats in these communities. Here is her interview excerpted from People Promoting and People Opposing Animal Rights by John Kistler.

This is one of my favorite quotes of all time by Lakota Sioux Chief Luther Standing Bear from his 1933 book Land of the Spotted Eagle:

"I am going to venture that the man who sat on the ground in his tipi meditating on life and its meaning, accepting the kinship of all creatures, and acknowledging unity with the universe of things was infusing into his being the true essence of civilization. And when native man left off this form of development, his humanization was retarded in growth."

India's Animals: Helping the Sacred & the Suffering

This richly illustrated book details the trials and tribulations of setting up an animal shelter and free veterinary services in the heart of a unique wildlife region in S. India, the UNESCO designated Nilgiris Biosphere Reserve.

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