Vinegaroon Care

Vinegaroon

(Mastigoproctus giganteus)

Vinegaroons are fascinating arachnids known for their ability to spray a vinegar-like substance (acetic acid) from their tails when threatened—hence their name! Despite their intimidating appearance, they are non-venomous and completely harmless to humans. Native to the southern United States and parts of Mexico, they are burrowing, nocturnal predators that love a quiet, humid environment and are surprisingly gentle.

Lifespan:
4-7  years (females generally live longer than males)

Sexing:

• Males tend to have longer tails and more slender pedipalps (claws)

• • Females are broader and may have slightly shorter tails

Enclosure:

• Minimum 10-gallon tank for one adult

• Use a secure lid—they are strong diggers and can climb low surfaces

• Provide a deep substrate for burrowing (see below) and include hides like cork bark, clay flowerpot halves, or logs

• Avoid sharp décor—these animals are very delicate

Substrate:
4–6 inches of coconut fiber, topsoil, or a sandy loam kept  slightly moist (not wet) at all times

Lighting & Temperature:

• Ambient Temperature: 72–80°F

• UVB Lighting: Not required, they prefer dim conditions. 

Humidity:

• Maintain 70–80% humidity

• Mist the enclosure lightly every few days

• Provide good ventilation to prevent mold

Food:

• Feed once a week:

• Crickets, dubia roaches, and other appropriately sized insects

• Prey should be no larger than the width of the vinegaroon’s body

Water:

• Shallow water dish with fresh water at all times. 
  

Fun fact: When they're scared, vinegaroons can spray a mist that smells like vinegar—it's their special way of saying 'Back off!'

These prehistoric-looking critters are low-maintenance, fascinating to observe, and a perfect conversation starter for anyone interested in unique invertebrates!