The Left is highly motivated by fear, and they fear a world in which they are not in control they will be victimized by those who are. This is driven by the Marxist belief that all power imbalances between people result in a oppressor/oppressed relationship.
totalitarianism
Dystopic Journal: What kind of person does this?
What kind of person is so caught up in the climate-change alarmism that they’d suggest pets are part of the problem? Perhaps someone caught up in mass-formation psychosis. (Oops! Did I say the 'M-F' word?) Pets are part of our families in the West, so it's no wonder that the left under Marxism, wants Fido and Kitty too. The Leftist religion of Climate Change makes way for this new target, our pets. This may sound off-the-wall, but then, there's a reason we use the word "psychosis," and we explore the role mass-formation psychosis or "mass hysteria," has been used to build totalitarian regimes.
LR Podcast, S3E25: They want our pets now
For people who love their pets, even liberals who don't own a gun, don't have kids, don't own a car, or don't understand money, their pets might be where they finally draw the line. The love of pets is one of the last commonalities between the Left and the Right in this world. You can mess with someone's gun, their car or their money, but don't mess with their pets. CNN may be barking up the wrong tree when it comes to downsizing Fido or Kitty.
Liberty Relearned 