No however the lack of oxygen is deadly. It is unlikely that you will hurt yourself sucking the helium out of balloons, as long as you breathe oxygen in between breaths of helium. There is a small percentage of helium (.0005%) in the earths atmosphere.
no but theres myths thaat it is but there is no such thing as a poisenous cat unless the cat getz poisened
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no its poisenous
it can be poisenous
a rabbit
we do it everyday
Nope - they are constrictors.
depends which ones some are and some are not
no its naturall it might stink though
KOMODO dragon
yes
poison ivy, poison oak