How to Care for a Goliath Tarantula

As the name suggests, goliath tarantulas (Theraphosa blondi) reach an impressive size. An adult can grow to 12 inches. The large size goes along with a feisty nature; this species is one of the less peaceful tarantulas. Goliath tarantulas attack readily if they feel the least bit threatened. Because of this, and because they can live for a long time -- 25 years or more -- goliath tarantulas are not suitable pets for children. Their aggression also makes them a difficult pet for beginners. Experienced arachnid enthusiasts, however, may enjoy the challenge of keeping one of the largest spiders in the world.

Things You'll Need

  • 30-gallon or larger tank
  • Cork bark or clay plant pot
  • Chemical-free potting compost or similar substrate
  • Heat mat
  • Dish
  • Plant mister
  • Live food
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Instructions

    • 1

      Add a thick layer, 4 inches or more, of chemical-free potting compost to a large tank with a secure, well ventilated lid. Add a piece of cork bark or a clay plant pot as a shelter for the tarantula. Goliath tarantulas are more secure when they have a hideaway.

    • 2

      Place the tank over a reptile heat mat, unless you are keeping it in a particularly warm room. Position the heat mat so it is at one end of the tank, not in the middle. Adjust the thermostat to maintain a temperature of about 78 to 82 F.

    • 3

      Fill a shallow ceramic dish with spring water.

    • 4

      Monitor the humidity. Goliath tarantulas do best at humidity of about 80 percent. Use a plant mister to raise the humidity as required. Good ventilation is necessary to prevent the damp air becoming stagnant.

    • 5

      Feed the tarantula large live insects, such as roaches, locusts or crickets, once or twice a week. Gut-loaded insects -- insects that have been fed a calcium and vitamin supplement -- provide more of the essential nutrients for a tarantula. Judge how many insects to feed by how many the tarantula consumes -- if any are still alive after a day, feed fewer the next time.

    • 6

      Remove any uneaten insect parts and molted skins and change the water daily. The tank itself only needs cleaning about once every six months, as tarantulas produce very little waste.