HI,
I took Lacy to get microchipped yesterday...Our local animal shelter does it for free but they have to be 4 months old.
Now the needle seemed pretty big to me (like the ones they use to pierce belly buttons) and since Lacy is tiny (1.2 lbs) she yelped pretty loud, but was just fine right after and no soreness...They told me that if she gets lost, or is stolen and is taken to a vet for a check up...most vets ( but not all) will take the pups into the back for a weight check and scan them and if the numbers dont match to the owner they will contact you...so in the end I guess it is worth the risk....or I should say pain!
Stacey and Lacy