Probably alligator-most common.
the most common place to find penguins is in Antarctica
japan
In the ocean.
Africa
a forest or the woods
At a pet store!
Underground
we have two words for alligator depending on where you are from. caimen and cocodril (pronounced cocodree) the second one is the most common.
There is no most common place to find Suicune (sometimes misspelled as suicun) in Pokémon FireRed. Where it goes is totally random.
Most of the hydrogen in the universe is contained in stars.
in the water but most are nearly getting extinct so it will be hard to find