venomousness

How can I possibly convey the terrible venomousness with which he uttered these words?

So it might have made sense for mammal lineages to evolve away from venomousness.

Why would the solenodon evolve venomousness while pretty much every mammal on Earth gets along fine without it?

Well, it may not be the case of the solenodon evolving venomousness, as much as other mammals losing it.

It may be that venomousness was rare in early mammals, as it is today, and solenodon has just always been an oddity.)

He raises the possibility that the very venomousness of rattlesnakes might be a survival disadvantage, simply because it makes other predators - especially humans, but also horses, antelopes, even mockingbirds - go out of their way to kill them.

Snake and poisonous creature are strict compatibles because adder and cobra, for instance, are hyponymous to both; furthermore, these species are independently characterisable - that is, they are not established solely on the basis of venomousness.

What made the fractiousness of the last 30 years so disturbing was the depth and venomousness of the disagreement - though it was part of an increased fractiousness throughout the culture, in everything from intensifying divisions among racial and ethnic groups to television programs like "Crossfire."