The major concern any time you implant a foreign body into your pet, whether that’s a microchip, a metal plate for a fracture or any other material, there’s the potential for your pet’s body to reject the substance.
There have been two documented cases in veterinary medicine where sarcoma or fibrosarcoma, two types of soft tissue tumors, occurred at the site of the injection.
While two cases are not very many, I believe there are likely many more cases that have not been documented. Research shows that between 1996 and 2006, up to 10 percent of laboratory animals had some type of reaction to being microchipped, ranging from a localized inflammatory response to tumor formation at the site of the injection.
Needless to say, it’s important to realize that implanting any foreign material into your pet’s body is a risk.
So if you believe that your pet is safe in your home, such as an indoor housecat or a dog that’s appropriately trained (which in my opinion would eliminate the need for chips!) or pets that are always kept on a leash outdoors -- and most importantly, is a dog that knows his name and comes when he’s called -- there’s a very good chance that you do not need a microchip. And in these cases the risks do outweigh the benefit.
However, if your dog doesn’t know to “come” or you let her outdoors off-leash and just hope she comes back, these are high-risk situations. Ideally, you should rearrange your lifestyle to keep a closer reign on your dog or get some obedience training.
If this isn’t a possibility, then microchipping your pet may be an option. But do remember that microchips carry the risk of an autoimmune reaction or a degenerative reaction where your pet’s immune system becomes aggravated or chronically inflamed, which can in turn lead to tissue degeneration and abnormal cell growth, or cancer at the site of implantation."
I thought I read somewhere it's more likely with cats than dogs. But the percentage is very low compared to dogs and cats getting lost.I figure 2 sarcomas at injection site are probably attributing the microchip to preventative attributes- there are probably 2 sarcomas in every cm2 body wide every 6 months in the US. And with 10m pets a year lost or stolen, that's not even a worry for me and mine. I do not wear foil in the evenings nor have any pyramids over my bed.
OK, I have to ask.... how does not being neutered factor into your not having them microchipped?This may be me being crazy, but we have two dogs under 2 who are not yet microchipped because they are not neutered. I wanted to contact the vet to get this done (just remembered), but is there any reason not to microchip?
I don't know about the OP but my vet charges a discounted microchipping fee if we have it done when spaying/neutering.OK, I have to ask.... how does not being neutered factor into your not having them microchipped?