( ( ( Males and ) females ) ( ( ( ( are promiscuous ) , ) ( not ( forming ( ( ( ( lasting pair-bonds ) , ) ( but rather ) ) ( mating ( with ( different individuals ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNPS Males)) (CC and) (NP (NNS females))) (VP (VBP are) (ADJP (JJ promiscuous)) (, ,) (S (RB not) (VP (VBG forming) (NP (NP (JJ lasting) (NNS pair-bonds)) (, ,) (CONJP (CC but) (RB rather)) (NP (NP (NN mating)) (PP (IN with) (NP (JJ different) (NNS individuals)))))))) (. .)))
Males and females are promiscuous, not forming lasting pair-bonds, but rather mating with different individuals.
(ROOT (S (S (VP (VBG Mating) (PP (IN with) (NP (DT no) (JJ strong) (NNS pair-bonds))))) (VP (VBZ is) (VP (VBN called) (NP (JJ promiscuous) (NN mating)))) (. .)))