“What is this I found in my room?” asks Christina about the green, worm-like creature pictured below. “I have no idea what this is but it freaked me out. I think it might have come from my cat. Either way, I feel itchy now. I ended up deep cleaning my sheets.” To us, this creature looks like a caterpillar: based on its green coloration, patterned skin, and the shape of its body. That said, it is difficult to tell exactly what it looks like, given that it is curled up into a ball. This is typical behaviour of many caterpillar species though. They do this when they feel threatened. But it must be said that other species of worm-like creatures also display this behaviour, like millipedes, so it does not necessarily indicate that this is definitely a caterpillar.