I guess this answers the question as to whether or not a small tortoise can be micro-chipped:
http://www.cnn.com/2009/WORLD/europe/09/19/england.lucky.tortoise/index.html?eref=igoogle_cnn
Yvonne
http://www.cnn.com/2009/WORLD/europe/09/19/england.lucky.tortoise/index.html?eref=igoogle_cnn
Yvonne