Spencer's goanna find, including highly venomous snakes, small mammals, small lizards, eggs, and carrion (dead animals), and is able to digest anything it eats. When threatened, "V. spenceri" hisses loudly, distends its throat and whips its aggressor with its muscular tail. "Varanus spenceri" lives in black soil plains with no trees; so Spencer's goanna is the only Australian monitor that does not readily climb although juvenile animals will climb given the opportunity. Clutch size of Spencer's monitor generally ranges between 11 and 30 eggs. "Varanus ingrami" , is an invalid name (a junior synonym) for this species. Spencer's goanna Spencer's goanna or
Goanna Other goannas are adapted to swampy coastal environments, such as the mangrove goanna ("V. semiremex"). Further still, the Mertens' water monitor (water goanna – "V. mertensi"), found in lagoons and rivers across northern Australia, is streamlined for swimming, using its tail as a paddle. Most other goannas are good swimmers, but tend not to voluntarily venture into the water. The diets of goannas vary greatly depending on the species and the habitat. Prey can include all manner of small animals: insects, smaller lizards, snakes, mammals, birds, and eggs. Meals are often eaten whole, thus the size of their meals may