Again, not on MY hand! This tiny Boreal Chorus Frog was found at Frank Lake, outside Calgary. Their size is 1.9 — 3.7 cm., making them the smallest species of frog in Canada. These brown to green frogs have three dark, sometimes broken stripes down their back. They belong to the tree frog family, but their toe discs are minute, and rarely do they climb higher than the tops of tall grasses.