Tarantula Breeding Compatibility Checker

What is the Tarantula Breeding Compatibility Checker?

The Tarantula Breeding Compatibility Checker scores compatibility between two tarantulas being considered for breeding. Behavior and compatibility mismatches are a common reason introductions go poorly or pets end up stressed, a little upfront assessment goes a long way.

Expect roughly 10-25 years with a tarantula, which is worth factoring into any long-term plan. They are an insectivore, so their nutritional needs shift with age, size and activity. Terrestrial species need more floor space than height, with substrate deep enough to burrow and no more than 1.5 times their leg span of climbing room, since a fall can rupture the abdomen. The usual suspects for this species are fall injury from over-tall enclosures, dehydration, failed molt, so any noticeable change is worth following up.

How does the Tarantula Breeding Compatibility Checker work?

The result comes from a weighted set of common, well-documented behavioral factors rather than a single yes/no rule, since real compatibility and temperament are rarely black and white. The math is only as good as what you feed it, so an accurate, recent input matters more than the formula itself.

What affects the result

• Household composition: other pets, children, and general activity level all matter
• The individual animal's history and socialization, which can outweigh general breed or species tendencies
• Living environment: including space and access to outdoors
• Your own experience level and lifestyle, which affects how well a given temperament fits

How do you use the Tarantula Breeding Compatibility Checker?

1. Answer "Young children in the household?"
2. Answer "Other pets already at home?"
3. Pick your household activity level (Low, Moderate, High)
4. Pick your hours the animal would be alone each day (Under 2, 2 to 5, 5 to 9, ...)
5. Pick your your experience with this species (None, Some, Extensive)
6. Press Calculate, then read the result alongside the sources listed below

If two people care for your tarantula, agree on one method and stick to it. Half of all confusing results come from measuring differently each time.

For related questions, see the other behavior tools or browse every tarantula tool.

Before you rely on this

Averages hide a lot of variation. The figure here reflects what is typical for tarantulas, but your tarantula may sit well outside it for perfectly ordinary reasons. Use the result to spot changes over time in your own animal rather than to compare it against other people's pets.