The new animals are all field mice.
Epidemic hemorrhagic fever: it is a disease spread by mice and can be divided into field mice hemorrhagic fever and house mice hemorrhagic fever.
The species ranged from tiny field mice to the 100 - pound capybara from Brazil.
Small animals like field mice and voles, which you do not see,
Not to mention the equally numerous small animals like field mice and voles which you do not see.