Readers discuss tardigrades, poison dart frogs and more

A taste for toxins

Researchers have identified a protein that may help a poison dart frog collect toxins from food and transport them to the frog’s skin, Erin Garcia de Jesús reported in “How poison dart frogs hoard toxins in their skin” (SN: 2/10/24, p. 4).

Poison dart frogs eat toxic insects.