With more than 4,300 species, lizards make up the largest living group of this animal class
I find that 
each lizard has a special trait or advantage that no other animal has such as the
... [DOC] [TLE] Chapter 15: Marine Animals - Crafton Hills College [PAR] Oceanography Chapter 15: Marine Animals ... Phylum- group of critters that share 
similar architecture, level of complexity and ... 90% of all living animals are 
invertebrates ... (therefore, their body can be no more than a few cells thick).