Polymers that contain sugars ...

Important glucose polymers to animals are glycogen, starch, and cellulose. The b-1,4 glycosidic linkages of cellulose prevent it from being digested by constitutive enzymes. Glucuronic acid, which is derived from UDP-glucose in the liver, is used to conjugate bilirubin, steroid hormones, and several xenobiotics.

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.  

i think that it is plants