Places in tropical or sub tropical areas where there is stagnant water gathered. An example would be an old disused car tire, which collects rain but is difficult to empty out. Or more simply, stagnant pools of water in an estuary.
It would be the Angus breed.
The Holstein breed.
Angus cattle are the most common.
Merinos
The two most common were malaria (that was transferred by mosquitoes) and scurvy (that sailors contracted from low vitamin C levels)
The most common biter is the German Shepherd ranking in first. Ranking second is the Chow-Chow. Third place is ironically the Golden Retriever. Weird isn't it?
There are no 'breeds' of chinchilla, but the most common colour is a standard grey
The most common types of insects found in Florida include mosquitoes, ants, termites, cockroaches, and lovebugs.
I know the American Shorthair is a pretty common cat, but it might not be the MOST common. :)
mutt breed cats are most common but after that is the tabby cat
Broad-Breasted White turkey is the most common.
Adelie and Emperor penguins are the most common to breed on the Antarctic continent.