beaded lizard
noun
bead·ed lizard ˈbē-dəd- 
: a venomous lizard (Heloderma horridum) of Mexico and Guatemala that is related to the Gila monster and has black or brown bumpy skin with yellow or white spots or bands, a broad flat head, and thick tail
Note: Beaded lizards typically weigh between three to six pounds (1.4 to 2.7 kilograms) with some males reaching a weight of over 8 pounds (3.6 kilograms).
Example Sentences
Recent Examples on the Web Gila monsters are one of two venomous lizards in North America, the other being the Mexican beaded lizard in Mexico. 
Shanti Lerner, The Arizona Republic, 17 May 2022 The other is its close relative, the Mexican beaded lizard. Scott Craven, azcentral, 28 Feb. 2020
Shanti Lerner, The Arizona Republic, 17 May 2022 The other is its close relative, the Mexican beaded lizard. Scott Craven, azcentral, 28 Feb. 2020 Word History
First Known Use
1779, in the meaning defined above
Medical Definition
beaded lizard
noun
bead·ed lizard ˌbēd-əd-
: a large yellow and black venomous lizard (Heloderma horridum) of Mexico that is related to the Gila monster