Explanation:

Frog – Lizard

Uric acid is the main excretory material in birds. Some terrestrial animals like reptiles (e.g. lizards) and mammals also excrete uric acid. Some invertebrates also produce uric acid, like insects. Such animals are called uricotelic. Aquatic animals largely excrete ammonia. These are called ammonotelic, for example, fishes and amphibians. Those animals that excrete urea are called ureotelic.