<human>: So, I just got a lovely little cat named Luna. She's about a year, a year and a half and pretty tiny. I live in an apartment located on the 5th floor of my building. My apartment doesn't have AC (I'm in NYC) and I usually like to leave the windows open for ventilation. They've got child bars, but because Luna is so small she can easily fit through them--and did a few moments ago. Nearly gave me a heart attack watching her slip through them and walked out onto a very narrow ledge 5 floors above a concrete sidewalk. She came right back in, but now I'm concerned about having a dead cat on my hands (or more accurately, on my sidewalk). So my question is, should I trust her cat instincts and leave the windows open? Or shall I sit in a stuffy apartment with the windows sealed?

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<bot>: I live on the 5th floor and my cat just walked out on my window ledge and came back in. Should I be nervous she's going to explore too far out and fall to her kitty death?