Smoke from Canadian wildfires is causing significant air quality issues across large Midwest and Northeast U.S. areas, prompting authorities to urge people to stay indoors. The impact of the smoke is not limited to humans but also poses threats to animals and wildlife, many of which cannot take shelter indoors. The increasing intensity and frequency of wildfires, largely attributed to human behavior and climate change, are expected to lead to more severe and far-reaching consequences. The long-term effects of these changing fire patterns on plants, animals, and human health remain unclear.
  

Key Points: 

1. Air quality in more than a dozen U.S. states has been compromised due to smoke from Canadian wildfires. Exposure to this smoke can lead to health issues ranging from mild respiratory symptoms to severe cardiovascular problems.
2. Wildfires also pose significant threats to animals and wildlife. Animals exposed to smoke may experience respiratory distress, inflammation, and impaired immune function.
3. While some plant and animal species have adapted to survive in wildfire conditions, the increasing intensity and frequency of wildfires, primarily due to human activity and climate change, lead to more extreme impacts.
4. There’s no clear threshold at which smoke exposure becomes dangerous for pets, but veterinarians recommend keeping pets indoors when local conditions are poor.
5. Immediate help for wildlife impacted by smoke is limited. Long-term solutions involve investing in habitat restoration and conservation and supporting robust climate policies to mitigate the impact of these events.

Source: https://time.com/6285655/wildfire-smoke-affects-plants-animals-wildlife/