Mr. Poo

I found him by accident.

I had brought home freshly picked dill without realizing that someone else had already claimed it. Hidden among the stems was a small, dark caterpillar covered in spines—so unlike the green swallowtail caterpillar he would later become that every attempt at identification led nowhere.

So I did what curiosity often asks of us. I came back the next day, and the next.

He ate. He molted. He changed almost completely. And, with impressive consistency, he left tiny pellets across the windowsill. By then, his name had chosen itself: Mr. Poo.

One day, when we leaned in too closely, he revealed the clue that finally allowed my partner to identify him. A bright orange, fork-shaped organ appeared from behind his head while a strange herbal odor filled the air. It was an osmeterium—the defensive display of an Anise Swallowtail caterpillar.

By then, identifying him felt less important than knowing him. Every morning I checked whether he was still there. Every day there was a little more dill missing and something new to notice.

Eventually, the windowsill felt too small for the next part of his life. I released him outside where he could continue becoming whatever came next.

I never learned exactly how his story ended. I like to think that is because it continued.

What Stayed With Me

Before he became a butterfly, he first became familiar.

Curiosity was not rewarded with one remarkable moment. It was rewarded with many small ones: a molt, a defensive surprise, a changing appetite, and a daily greeting from a tiny life sharing our home.

The windowsill felt strangely empty after he left. Some visitors stay only long enough to remind us that brief relationships can still leave lasting impressions.

Which small life has quietly become part of the rhythm of your own home?