Originally Posted by booktigger
Chips can migrate, but that is why any decent vet/rescue will check the cat all over, very rare for them not to be found, and they dont need to be removed because of it - the reason they are done on the neck is that there is like an empty pouch there, and that is where they are placed, so if they aren't staying in place, they could be being inserted wrong!!
I have to agree with this. I work at our local shelter and microchip all day long
It is normal for a chip to move around the body a little bit- usually only an inch or two over from where it origionated...keep in mind your animal is active and is constantly moving it's muscles/etc so that is completly normal! The reason you scan your animal immediately after chipping is to make sure the chip took and did not fall out of the needle when it was removed. (This is why ALL good techs/vets pinch the skin together around the needle when removing it
) I personally chip ALL animals between the shoulder blade area. The chip migrates less in that area and is easier to insert into the tissue. When I check an animal that comes into the shelter for a chip with the scanner- i DO check the entire body just incase in the rare even a chip has migrated. It is rare for a chip to migrate into an entirely different region of the body, but not impossible. Any good shelter/vets office will check the entire body upon arrival of a new pet to check for a chip. Along with microchipping at our shelter- we do spay/neuter tattoos on ALL of our animals as well
Each shelter in the area uses a different color dye. My shelter, Bartlett uses at teal green, the memphis shelter uses a blue dye and so on- it helps us know what shelter did what to which animal and we can simply call and check files
Many vets in the area have also picked up the same practice- it's great!