( Ticks ( ( ( are well ) ( known ( bloodsucking ( ( external parasites ) ( of ( ( ( ( ( ( ( humans , ) pets ) , ) livestock ) , ) and ) ( wild animals ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Ticks)) (VP (VBP are) (ADVP (RB well)) (VP (VBN known) (S (VP (VBG bloodsucking) (NP (NP (JJ external) (NNS parasites)) (PP (IN of) (NP (NP (NNS humans)) (, ,) (NP (NNS pets)) (, ,) (NP (NN livestock)) (, ,) (CC and) (NP (JJ wild) (NNS animals))))))))) (. .)))
Ticks are well known bloodsucking external parasites of humans, pets, livestock, and wild animals.
(ROOT (S (NP (VBG Bloodsucking) (NNS parasites)) (VP (VBP are) (NP (NP (QP (RB nearly) (DT all)) (NNS ticks)) (SBAR (WHNP (WDT that)) (S (VP (VBP live) (PP (IN on) (NP (NP (DT the) (NN body) (NNS surfaces)) (PP (IN of) (NP (NNS reptiles) (CC or) (NNS mammals)))))))))) (. .)))