anywhere, but it completely depends on what animal you want to find.
find out find out
I find it easier to find the answer if you look it up as... "What kins of plants grow after pioneer species?"
You will mainly find fish.
check out nz threatened species
You can find a list of all animal species in the world on the Wikipedia website.
new species occur over time
the genus of a mongoose is 'Herpestes' soz i couldn't find the species
newly erupted volcano is where u would find pioneer species
everywhere
Geographic isolation of a common ancestral species of finches
Try to find out what species of caterpillar it is and then research and find out what kind of plant that species eats. Some caterpillars have to have certain plants to eat while others are not quite as picky.
If you find an invasive species, report it to local authorities or organizations that handle invasive species control for proper identification and management. Avoid spreading the species further by not intentionally moving or planting it elsewhere, and consider helping with removal efforts if possible.