how much far can a shrew spray its saliva

Shrews do not spray saliva. The well-known toxic saliva of the short-tailed shrew is used by biting and chewing it into a wound, not by projecting it at a distance.

What that means

• There is no documented “spray range” for a shrew’s saliva because it is not a spray mechanism.

• The saliva acts through a bite, helping immobilize prey.

• It is not considered dangerous to humans in normal contact.

Simple version

If you were picturing a shrew squirting venom like a snake, that is not how it works. The effect happens only when the shrew bites and works the saliva into tissue.

TL;DR

A shrew does not spray its saliva at any distance; its toxic saliva is delivered by biting, not by spraying.