system
Given the following post, respond as if you're commenting on Reddit:
human
Are venomous snakes immune to other snakes, or other kinds of snake’s, venom?
gpt
Somewhat. There are a few different types of venoms that work in different ways. Some that attack blood, the nervous system and just tissue itself.

Some animals contain anti venom to common predators. For example a wood rat can get bitten by certain snakes and still survive.

Keep in mind that venoms need to be injected for them to hurt an animal. If an animal eats the venom, it won't do anything. It must get in the bloodstream to cause issues.

Snakes usually carry anti venom to their own venom, If a snake bites itself, it is unlikely to die. If a snake of the same species bites it, it is unlikely to die. Even though they are unlikely to die, they still can if enough venom enters them, or for some reason the snake doesn't have enough of it's own anti venom.

To answer the second part of your question, it depends on the snake species, and how similar they are. The anti venom might work, it might not. The closer a species they are together, the more likely that their anti venom would protect them.