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Tarantula Care and Habits – Useful Facts for those with Pet Tarantulas

Over 900 of the world’s 40,000+ spider species are commonly known as tarantulas (family Theraphosidae).  Among them we find a staggering diversity of sizes, colors, and lifestyles, and many species that make interesting, long-lived pets.  In the early 1980’s, I had the chance to work with the huge collection of a long-time friend, now a noted arachnologist.  Several species in that collection were (and remain) little known in the hobby or zoos.

Goliath Bird Eater

Uploaded to Wikipedia Commons by Bobisbob

Today, a wide variety of pet tarantulas, including such long-time favorites as the Mexican Red Leg (Brachypelma), Chilean Rose-Haired (Grammostola), Pink Toed (Avicularia) and the massive Goliath Bird-eating Tarantula (Theraphosa blondii), are now regularly bred by hobbyists.  The key to success with tarantulas is an understanding of their lives in the wild.  Following is an overview; please remember that tarantulas are an extraordinarily diverse group, so details will vary.  Please post below for information on individual species.

Unique Characteristics

While the fangs, or chelicerae, of typical spiders move from side-to-side when grasping prey, those of tarantulas are employed in a downward strike.  Tarantulas are also distinguished from other spiders by their unusual respiratory organs, known as book lungs, and by the presence of 2 claws and adhesive pads on the tips of the legs.  The defensive, urticating hairs of New World species are also unique among spiders (please see “Handling”, below).

One typically sees tarantulas referred to as “primitive” spiders, but they quite successful (please see “Range and Habitat”), and may be the dominant invertebrate predators in many environments.

Females of several species may live into their 30’s, while males rarely exceed 1- 4 years of age. Read More »

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