Assertion or assert may refer to: Assertion (software development), a computer programming technique. assert.h, a header file in the standard library of the C programming language. Assertion definition language, a specification language providing a formal grammar to specify behaviour and interfaces for computer software.
Grass snakes prey mainly on amphibians, especially the common toad and the common frog, although they may also occasionally eat ants and larvae. Captive snakes have been observed taking earthworms offered by hand, but dead prey items are never taken.
Medium-sized snakes, such as the. eastern garter snake and eastern ribbon. snake, feed heavily on frogs, toads and. salamanders. Larger snakes, such as the. black rat snake and timber rattlesnake, feed mainly on rodents.