805c6b55_thanasia___Conditional_Methods__5
[0] Nitrogen, Argon [1] Hypoxia [2] Reduces partial pressure of oxygen available to blood [3] Rapid [4] Use closed chamber with rapid filling [6] Cats, small dogs, birds, rodents, rabbits, other small species, mink, zoo animals, nonhuman primates, free ranging wildlife [7] Effective except in young and neonates; an effective agent, but other methods preferable [5] 
Safe if used with ventilation
Euthanasia - Conditional Methods