Timber Rattlesnake

One of the best-known rattlesnakes in North America.

GenusCrotalus

RegionNorth AmericaEastern United States

Photo: Jonathunder · Source: Wikimedia Commons · License: CC BY-SA 3.0

Timber Rattlesnake

Photo: Jonathunder · Source: Wikimedia Commons · License: CC BY-SA 3.0

Timber Rattlesnake

Danger Score

Final Danger Score

Venom Core

Lethality weighted 55% (potency × yield). Clinical weighted 45% (real-world CFR).

0.55 × 46 + 0.45 × 5248.7

Modifiers

Multiplicative scalers - amplify or reduce existing danger, can't create it from nothing.

× Speed (1.01)49.2

× Delivery (1.00)49.2

× Encounter (0.89)43.8

Speed = antivenom window. Delivery = fang efficiency. Encounter = exposure × temperament.

Score44

Type

NeurotoxicAffects the nervous system; disrupts nerve-muscle communication and can cause paralysis or respiratory failure.

Venom Yield

High

Venom Speed

Quick

Delivery Method

Hinged front fangs

Potency (SC Equivalent)

4.920mg/kg LD50

Max Dry Yield

140mg dry

Fatality (Untreated)

5-15%

WHO Importance

Cat. 1

Local Effects

Pain at bite site

Neurological

Paralysis

Gastrointestinal

Nausea or vomiting

Causes of Death

Respiratory failure