Quote Originally Posted by wolf_Q
Would a dog gaining weight affect the chip being able to be read? I'm just wondering if maybe there is more tissue above the chip than when it was inserted, if that could make it harder to read.

Nebo had a microchip put when he was neutered as a pup. I had them check it a while ago, I think last summer, and they were able to read it just fine, it beeped immediately. Keva has a microchip too, it was put in when she was spayed. I haven't had them check to see if they can read it yet.

I keep collars on them with tags too, I would think that most people would only look for tags...but if there's the chance they took the dog to a vet/shelter they'd scan for a microchip. I think its a good back-up.

I do worry about the different brands of micro-chip and if they had the right scanner though...mine are both Avid, not Home Again.
Thats a good point she has gained some weight.