( They ( also ( ( ( ( ( use ( their tongues ) ) ( to ( find ( their prey ) ) ) ) and ) ( for smelling ) ) . ) ) )
(ROOT (S (NP (PRP They)) (ADVP (RB also)) (VP (VP (VBP use) (NP (PRP$ their) (NNS tongues)) (S (VP (TO to) (VP (VB find) (NP (PRP$ their) (NN prey)))))) (CC and) (VP (PP (IN for) (S (VP (VBG smelling)))))) (. .)))
They also use their tongues to find their prey and for smelling.
(ROOT (S (NP (NNS Snakes)) (VP (VBP use) (NP (PRP$ their) (NN tongue)) (PP (TO to) (NP (NN smell) (NNS things)))) (. .)))
Snakes use their tongue to smell things.