I don't believe this has never been discussed before, but I've seen some confusion over what type of animal the character below is.
I've measured it down to the character either being a mole or gopher.
According the August 1993 script written by Irene Mecchi and Jonathan Roberts (two of the film's screenwriters), they wrote that the character "a mole" while other scripts found here (which I'm sure some of you look on to do "Line by Line") claim it is a gopher.
Also, gophers tend to reside mostly in North America while according to the Wikipedia article, moles can be found in some parts of North America, Asia, and Europe. It also says those moles are completely unrelated mammals to those who live in Australia and southern Africa.
So, it appears the character is a mole, but what species of a mole? The article written by David Cleary offers some suggestions, but I want your own independent thoughts.