Chameleon (reptile)
From Tardis Wiki, the free Doctor Who reference
Chameleons were Earth reptiles noted for their eyes and long, sticky tongue. Dodo Chaplet pointed one out to Steven Taylor aboard the Ark. (TV: The Ark)
Evelyn Smythe compared the Galyaris' eyes to that of a chameleon's. (AUDIO: The Sandman)
While scanning space for Cyber-Warships, the Seventh Doctor spotted a lizard and realized the ships were camouflaged: This may be because it reminded him of the chameleon's ability to blend into its surroundings. (TV: Silver Nemesis)