“These teeny tiny worm-type things have suddenly appeared in our baby’s cot!” writes Kristin in her submission regarding the segmented creature with the bulbous head pictured below. “They look like bits of dirt initially, but when we looked closer they are moving! Could they be inchworms? And is this common in a babies cot? Thank you.” Based on the great photo Kristin sent in, as well as her keen eye for caterpillars, we can confirm that this is indeed an inchworm. Firstly, and most importantly, inchworms are not harmful to babies, or to grown adults for that matter. They are caterpillars of moth species which are endemic to North America, and they are characterized by the placement of their legs (at the front and back) which makes them arch their back as they walk.