The purpose of using the binomial scientific names is to Give each organism a unique name
Give each species a unique name
Study how the environment affects different organisms
Study the evolution of life
Protect endangered species

study the evolution of life

dogs is better and probably lizards.

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.