( ( for ( others ( it ( is ( animal behavior ) ) ) ) ) ; )
(ROOT (PP (IN for) (NP (NP (NNS others)) (SBAR (S (NP (PRP it)) (VP (VBZ is) (NP (NN animal) (NN behavior)))))) (: ;)))
for others it is animal behavior;
(ROOT (S (NP (PRP We)) (VP (VBP call) (ADVP (DT any) (NN way) (SBAR (IN that) (S (NP (NNS animals)) (VP (VBP act))))) (, ,) (S (UCP (DT either) (ADVP (RB alone)) (CC or) (PP (IN with) (NP (NP (JJ other) (NNS animals)) (, ,) (NP (NN animal) (NN behavior))))))) (. .)))