Travel Reference
In-Depth Information
op. These 2-ton creatures can sprint at 30mph and have actually harmed more visitors than
bears have.
Moose usually flee intruding humans but if a moose feels cornered or otherwise
threatened, it may suddenly charge. Moose cows with calves are especially dangerous, as
they will aggressively defend their young. Moose can inflict severe injuries by striking out
with their powerful front hoofs.
Your chances of encountering an aggressive mountain lion remain extremely small, but
as humans encroach on their territory attacks appear to be on the increase. Avoid hiking
alone in prime mountain-lion habitats. Keep children within view at all times. If you hap-
pen to encounter a mountain lion, raise your arms and back away slowly. Speak firmly or
shout. If attacked, fight back fiercely.
There have been no reliable documented cases of fatal wolf attacks on humans for more
than a century. Attacks on humans by wild wolves are believed to be attributable to either
rabies infection or habituation - when a wolf has lost its fear of people.
If you stay aware and keep a respectful distance from all wildlife, most encounters will
be avoided.
Bites & Stings
LEECHES
Sometimes present in lakes, leeches attach themselves to your skin to suck your blood.
Salt or a lit cigarette end will make them fall off. Do not pull them off, as the bite is then
more likely to become infected. Clean and apply pressure if the point of attachment is
bleeding.
MOSQUITOES
Mosquitoes can be a major irritant in early and midsummer (until around mid-August), so
remember to carry mosquito repellent. The most effective sprays contain DEET (the high-
er the percentage of DEET, the more effective the spray). DEET is powerful stuff and
should be kept away from plastics. Citronella is a kinder (to the skin at least) alternative.
SNAKES & SPIDERS
In the history of the park there have been only two recorded snakebites. The prairie
rattlesnake is the only poisonous snake in the region, found in the driest and warmest river
areas of Yellowstone. There are some spiders with dangerous bites but antivenoms are
usually available.
