▁rivers , ▁est u aries , ▁coast al ▁marine ▁waters , ▁sw amps , ▁and ▁marine ▁wet lands . ▁All ▁four ▁species ▁are ▁end anger ed . ▁ ▁Family : ▁D ug ong idae ▁Gen us : ▁D ug ong ▁ ▁D ug ong , ▁D ug ong ▁d ug on ▁V U ▁ ▁Order : ▁Prim ates ▁ ▁The ▁order ▁Prim ates ▁contains ▁humans ▁and ▁their ▁closest ▁relatives : ▁lem urs , ▁l oris oid s , ▁mon keys , ▁and ▁ap es . ▁ ▁Sub order : ▁H ap lor h ini ▁Inf ra order : ▁Sim i iformes ▁Par v order : ▁Cat arr h ini ▁Super family : ▁C erc op it he co idea ▁Family : ▁C erc op it he c idae ▁( Old ▁World ▁mon keys ) ▁Gen us : ▁Pap io ▁ ▁Ham ad ry as ▁b ab oon , ▁Pap io ▁ham ad ry as ▁L R / nt ▁ ▁Order : ▁Rod ent ia ▁( rod ents ) ▁ ▁Rod ents ▁make ▁up ▁the ▁largest ▁order ▁of ▁m amm als , ▁with ▁over ▁ 4 0 % ▁of ▁m amm al ian ▁species . ▁They ▁have ▁two ▁in cis ors ▁in ▁the ▁upper ▁and ▁lower ▁j aw ▁which ▁grow ▁contin ually ▁and ▁must ▁be ▁kept ▁short ▁by ▁g na wing . ▁Most ▁rod ents ▁are ▁small ▁though ▁the ▁cap y bara ▁can ▁we igh ▁up ▁to ▁. ▁ ▁Sub order : ▁Hy str ic ogn ath i ▁Family : ▁Hy str ic idae