I spend some time clearing field in a wooded area, from
time to time. While I never have encountered any boar,
snakes, or threatening wild animals, I change from
HPs to FMJs for SD when working the property.
IMO, it helps if you give the animals a fair chance to
retreat. Make some noise, be observant and alert,
and move slowly, till you're sure all the critters
have found someplace better to be for the day...