Which of the following is NOT a symptom of venomous snake bites?

A symptom that is typically associated with venomous snake bites includes pain, tingling, and burning sensations, which can all result from the injection of venom into the body. These symptoms occur due to the toxic effects of the venom on the neural and muscular systems, often leading to localized and systemic reactions depending on the species of snake.

The presence of black marks, on the other hand, is not a standard symptom of venomous snake bites. While bites can certainly show bruising or discoloration, black marks are not a recognized or common response to envenomation. Symptoms from a venomous snake bite tend to focus on pain, swelling, and systemic effects such as nausea or difficulty breathing rather than specific discoloration in the form of black marks.