Here are some additional factors:
* Geographic Isolation: Newfoundland has been separated from the mainland for a long time, preventing natural migration of skunks to the island.
* Climate: Skunks are adapted to warmer climates, and the colder winters of Newfoundland would make it difficult for them to survive.
* Lack of Suitable Habitat: Newfoundland's terrain and vegetation might not be suitable for skunks, which prefer areas with dense undergrowth and access to water sources.
Therefore, the absence of skunks in Newfoundland is a result of natural barriers and ecological factors that have prevented their establishment on the island.