are mexican salamanders a poisonous species

Mexican salamanders, specifically axolotls (Ambystoma mexicanum), are not known to be poisonous in the traditional sense. They do not have any specialized toxins or venom glands like some other animals such as certain species of frogs or snakes.

However, there are a few things to keep in mind:

1. Skin Secretions: Like many amphibians, axolotls have moist, permeable skin that can secrete substances that help protect them from pathogens and dehydration. These secretions might be mildly irritating to some people upon contact but are not considered toxic.

2. Handling: It's important to handle axolotls carefully and gently if you're keeping them as pets, as their delicate skin can be easily damaged. Always wash your hands thoroughly after handling them.

3. Natural Defenses: Axolotls have a few natural defenses, such as staying hidden and camouflaged during the day and being active at night, which helps them avoid predators.

4. Captive Care: If you're caring for axolotls, make sure to use appropriate water conditions and diet to ensure their health.

In summary, axolotls are not poisonous animals, but they should be handled with care and respect, just like any other living creature. Their unique features and biology make them fascinating subjects for study and appreciation.