During the early design stage of Inherit the Earth: Quest for the Orb, the foe that Rif has to evade in Prince's maze was an actual reptile Morph of some sort. Here is a sketch of the creature.
The artist was wondering if the creature should have a tail or not.
Eventually it was decided to only have mammalian Morphs, so this "e;lizard morph" became a Komodo Dragon.
Artist: Eric Blumrich