The standing baby or pup armadillo is 3 1/2" tall at the tallest point, 4 1/2" from nose to tail.  His body is approximately 5 1/4" in circumference.

The 3rd armadillo is also a pup and it has burrowed down into the ground so only the back end of him is showing.  It measures approximately 4 1/2" long, it is 5" in circumference.  This pup does not have a head it is only the body. 

The adult armadillo is 8 1/2" long from the end of his nose to the tip of his tail.  He is approximately 3 1/4" tall at the tallest point, the body is 9" in circumference.  The armadillo’s head is turned a bit looking to one side.