Axolotl. Smiling pets :) (44 pics)
Axolotl is a very unusual creature. It belongs to the group of mole salamanders and larvae of this species fail to undergo metamorphosis, so the adults remain aquatic and gilled.
They have an ability to regenerate most body parts. Until now, axolotls were sold widespread on the market for food, but nowadays they are often kept as pets.
And they are smiling :)