Ok so I've had Norman for about a month now and I have a question about feeding. He has eaten 5 times for me since I got him. He weighs about 120g. His first meal was a hopper mouse and then I started giving him small mice. Yesterday I gave him the last small mouse I had and it was the biggest one in the package. With the others there has been no visible lump afterwards, but this time he did have a lump. It also seemed to take him longer to get the lump down into his body. Is this normal? Should there be a lump, and how big should it be? The lump was just a tad bigger than his body. Also, if this is normal, should I switch him over to medium mice? I don't have access to a scale at the moment, so I've just been going by diameter.