The one on top is nidoran,
and it would make sense for the one underneath to be sandshrew, because the order of those Pokémon are the first unevolved forms in chronocological order of the first 151 Pokémon ;]
(
ClanSoul,
Sun 27 Jul 2008, 23:47,
archived)
it looks like a faded raticate riding chameleon and snorlax's lovechild.
(
Nathanial Hornblower,
Sun 27 Jul 2008, 23:53,
archived)
I thought more like a Rattata and Eeevee
(
2P4E nil admirari,
Mon 28 Jul 2008, 0:34,
archived)