With a silencer, I guess. What do I know? I've never shot anything nor do I plan to - but it seems a silencer would be quieter than a dog that was still dying of poison two days later.

Silencers in real life aren't like what you see in the movies. They are just enough to prevent hearing loss (usually) but that's it.

If you want to shoot something quietly, use a crossbow.

Seriously?!? That jioop sound is another Hollywood lie? Man, I've about had it with those people. They really don't care about reality at all!