Dog Microchip Implants Linked To Cancer

If you consider microchipping your dog so you can locate it in case it gets lost or because the law requires you to do so, you may be doing it more HARM than good.

Here are some true stories of dogs that developed cancer after being implanted with microchips…

Seamus, a 5-year old bullmastiff, developed a tumor (hemangiosarcoma) around 2 microchips implanted in between the shoulder blades in Sep 2009. Three months after the tumor was removed, the cancer returned. He was eventually put to sleep in Feb 2010.

The owner wanted to prevent Seamus was from being stolen, so he thought he did the right thing by giving him the microchip implant. Little did he know that it was a death sentence for his dog.

Scotty, a 5-year old Yorkshire terrier, also developed a tumor (malignant lymphoma) between his shoulder blades where the microchip was implanted. He was given 1 year to live.

Leon, a 9-year old french bulldog, was diagnosed with fibrosarcoma at the site of the microchip implant in April 2004 and eventually died. Here’s a memorial website dedicated to: Leon and sharing the real TRUTH about pet microchips and vaccines.

In her review of literature published in oncology and toxicology journals between 1990 and 2006 addressing the effects of implanted radio-frequency (RFID) microchips on laboratory rodents and dogs, Dr Katherine Albrecht found that malignant sarcomas and other cancers developed around or adjacent to the implanted microchips in laboratory animals (rats and mice) and household pets (dogs). In nearly all cases, researchers concluded that the microchips had induced the cancers.

“On the basis of these findings, physicians, patients, veterinarians, and pet owners may wish to carefully consider whether the benefits of implants are worth the potential health risks such implants appear to pose. It is the opinion of this researcher (Dr Katherine Albrecht)┬áthat further microchipping of pets or human beings should be immediately discontinued.” – Dr Katherine Albrecht

One thought on “Dog Microchip Implants Linked To Cancer

  1. Mary Jane

    Thank you for sharing this important information. Unfortunately, those promoting microchip implants are not warning the public of potential adverse reactions associated with microchip implants. Instead, the chips are promoted as “safe” and “life-saving” devices. The truth, however, is that there are serious potential adverse reactions associated with microchip implants.

    For scientific reports that clearly demonstrate that microchip implants have resulted in tumors, neurological damage, and death, visit:

    It is also important to realize that microchip scanners cannot read all microchip implants all of the time. A document published in JAVMA even says, “None of the scanners examined had 100% sensitivity for any of the microchip brands. In addition, there were clear differences among scanners in regard to sensitivity.” ( ) This means that your animal may be scanned for a chip but the scanner may not be able to read it. This is what happened to a dog named Hadden. Sadly, Hadden was euthanized because the shelter’s scanner could not read his chip. Here is Hadden’s story:


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