( ( Animal behavior ) ( ( includes ( ( all ( the ways ) ) ( ( that animals ) ( interact ( with ( ( ( each other ) and ) ( the environment ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Animal) (NN behavior)) (VP (VBZ includes) (NP (NP (PDT all) (DT the) (NNS ways)) (SBAR (WHNP (WDT that) (NNS animals)) (S (VP (VBP interact) (PP (IN with) (NP (NP (DT each) (JJ other)) (CC and) (NP (DT the) (NN environment))))))))) (. .)))
Animal behavior includes all the ways that  animals interact with each other and the environment.
(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))))))) (. .)))