 Climate plays a major role in the moose-wolf relationship as well.Since El Niño hit in 1998, the climate has warmed up, which has significantly affected the moose population across North America.The warmer climate in recent years has produced more Moose winter ticks, which consume the blood of animals, making them more susceptible to anemia, and induce the moose to scratch off their hair, exposing them to hypothermia in cold weather.