How to survive a cheetah attack<br>Bring a dog. Dogs make effective early warning systems. Cheetahs can be extremely stealthy, and you may not notice one approach until it is too late.
Injurious cheetah attacks are unlikely when barking gives early alert. 
Because the passage says that dogs are good early warning against cheetah attack. 
( z1 likely :polarity - :ARG1 ( z2 attack :ARG0 ( z3 cheetah ) :ARG0-of ( z4 injure ) ) :condition ( z5 warn :ARG0 ( z6 bark ) :time ( z7 early ) ) )