Thanks for that Blue, I should have put two and two together on that one. Maybe too many beverages,haha. I actually had heard of goblet cells and their function as I have had chronic acid reflux which can lead to Barrett's oesophagus which as you probably know is the changing of the oesophagus wall cells to goblet cells to produce the mucous and protect from the rising acid from reflux. Sometimes knowledge is being able to piece together the bits of information that you have learnt separately and apply it practically. Cheers Andy - - - Updated - - - It is quite common for a snake to eat a mouse/rat backwards and it is pretty rare that a claw will cause internal damage to the extent that it will kill a snake especially considering the size of the prey opposed to the size of the snake. Not impossible but very unlikely in my opinion.