<human>: Can you condense the text into a few key points?

Not sure if this is the right subreddit but i just need some advice. I am a college student living in Colorado where it can get quite cold. Our neighbor who i assume is also a college student has a cat that they leave outside during any weather conditions. The cat sits on my porch and waits to try and run inside to get warm. The cat only does this on very cold days. I called the number on his tag once and the owner's mother answered and said she would contact her daughter. Her daughter called me back and said that she leaves the cat outside all day while she works. It dips below freezing and there is 15 inches of snow on the ground, this seems unacceptable. What should i do?
<bot>: Neighbor leaves cat outside in 15 inches of snow all day and cat tries to come in my house. i feel bad for cat but have an allergic roommate so cant take him in during the day. Advice?