For the orthographic projection as a map projection, see Orthographic projection in cartography. For mathematical discussion in terms of linear algebra, see Projection (linear algebra).
Bullfrogs are the largest real frog found in North America, weighing up to 0.5 kg and measuring 460 mm in length. Their average length is 100-175 mm. Their color varies from brownish to shades of green, often with spots or blotches of a darker color around their backs. Their back feet are fully webbed.
The bulk of a bullfrog's diet is insects, spiders, crayfish and other invertebrates, but they may also consume mice, small turtles, fish, snakes (including rattlesnakes), birds and other amphibians. A bullfrog will eat about anything it can get in its mouth. Notes. Bullfrogs may live four to five years in the wild.