( Animals ( also ( ( commonly ( ( use ( aggressive displays ) ) ( to ( ( communicate ( ( the nature ) ( of ( their ( aggressive state ) ) ) ) ) ( to ( ( other individuals ) ( of ( their species ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NNS Animals)) (ADVP (RB also)) (VP (ADVP (RB commonly)) (VBP use) (NP (JJ aggressive) (NNS displays)) (S (VP (TO to) (VP (VB communicate) (NP (NP (DT the) (NN nature)) (PP (IN of) (NP (PRP$ their) (JJ aggressive) (NN state)))) (PP (TO to) (NP (NP (JJ other) (NNS individuals)) (PP (IN of) (NP (PRP$ their) (NNS species))))))))) (. .)))
Animals also commonly use aggressive displays to communicate the nature of their aggressive state to other individuals of their species.
(ROOT (S (S (VP (VBN Exemplified) (PP (IN by) (NP (ADJP (VBG baring)) (NNS teeth))))) (, ,) (NP (NP (JJ aggressive) (NN type)) (PP (IN of) (NP (NNS displays)))) (VP (VP (VBP are) (ADJP (JJ common) (PP (IN in) (NP (DT the) (NN animal) (NN kingdom))))) (, ,) (CC and) (VP (ADVP (RB sometimes)) (VBP serve) (PP (IN as) (NP (DT a) (`` `) (NN bluff) ('' '))))) (. .)))
Exemplified by baring teeth, aggressive type of displays are common in the animal kingdom, and sometimes serve as a 'bluff'.