The opossum or possum, Didelphis virginiana, is currently the only marsupial native to the USA. They groom themselves like cats and one possum can eat some 5,000 ticks in a single season, killing ~90% of all the ticks they encounter. – WTF Fun Facts
Source: https://www.wideopenspaces.com/did-you-know-that-opossums-eat-virtually-all-the-ticks-in-your-yard/