Scariest 'finishing move' in the Animal Kingdom (ハロウィーンお遊び)

Let us suppose you're having your usual nightmare in which some of the baddest, most fearsome monsters of the Cenozoic Animal Kingdom, somehow attack you non stop, using their greatest 'finishing moves' on you without any mercy(oh lord)... then which one of these 13 'finishing moves' do you think would be 'the scarist' for you, like, scare enough to wake you up immediately? 

Ok very sorry for kind of crappy topic but let's see your opinions.


1) 'Axe-head'
(beak peckings)
by a pair of Kelenken guillermoi
(1 male, 1 female)


2) 'Big Squeeze' 
(constriction) 
by Titanoboa cerrejonensis


3) 'Bonecracker Pack'
(cooperative pack predation) 
by a Pack of Epicyon haydeni
(2 adults, 5 juveniles )


4) 'Cold-blooded Venomation' 
　(several repeated venomations) 
by extremely venomous and also fairly large snakes such as the King Cobra
(10 adults)


5) 'Gape Squash'
　(bites) 
by Hippopotamus gorgops major


6) 'Killer Whale Surge'
　(beaching predation)
by Orcinus orca


7) 'Maced Clubbing'
　(full swing tail attacks) 
by Doedicurus clavicaudatus 


8) 'Megaton Death-roll' 
　(death-rolling bites) 
by Purussaurus brasiliensis


9) 'Mega Swiping'
　(clawed forequarter swipings) 
by Megatherium americanum


10) 'Sabertooth Nightmares'
　(cooperative pride predation + slashing bite killing technique) 
by a Pride of Smilodon populator
(1 male, 3 females)


11) 'Straight Tusk Ramming' 
　(tusk thrusts with force) 
by Palaeoloxodon antiquus 


12) 'Titanic Swing'
　(swinging headbutts)
by Paraceratherium transouralicum


13) 'Unicorn Gore' 
　(running gores) 
by Elasmotherium sibiricum