Wild Moose Welfare and Climate Change

Moose are increasingly stressed by warming temperatures, expanding parasite loads, and habitat changes driven by climate change, with severe welfare and population consequences.

Key Facts

Moose are cold-adapted animals that become heat-stressed at temperatures above 14-17 degrees Celsius
Climate warming is driving moose populations south and to higher elevations seeking cooler conditions
Winter tick infestations have exploded as shorter winters allow more ticks to survive
A single moose can carry 75,000+ winter ticks, causing anemia, hair loss, and death from exposure
Moose populations in the northeastern US have declined by 40% in some areas over recent decades
Brain worm (Parelaphostrongylus tenuis) transmission is increasing as white-tailed deer expand northward

Welfare Considerations

Individual moose experiencing heavy tick burdens suffer intensely. Massive blood loss from thousands of feeding ticks causes severe anemia. In winter, ticks cause moose to scratch off their insulating hair coat trying to remove the parasites, leaving them vulnerable to hypothermia. Called 'ghost moose' for their pale, patchy appearance, these animals often die slowly of a combination of blood loss and cold. Heat stress from warming summers adds another welfare burden. These compounding stressors cause prolonged suffering for affected individuals.

What You Can Do

Support climate action policies to reduce warming that is expanding tick and parasite ranges
Donate to wildlife monitoring programs tracking moose population health
Advocate for forest management practices that maintain diverse, cool habitats for moose
Support research into tick control methods that protect moose without harming other wildlife
Participate in citizen science programs monitoring moose sightings and health observations
Reduce vehicle speeds in moose country and advocate for wildlife crossing infrastructure