This phenomenon, while fascinating, is also a cause for concern for some. The migration is driven by a combination of factors, including the changing seasons, the availability of food, and the need to find suitable breeding grounds. As the weather cools down in the fall, tarantulas seek out warmer temperatures and more hospitable environments.

However, there are some serious ethical and ecological concerns associated with keeping wild-caught tarantulas as pets. Wild-caught tarantulas are often subjected to stressful and inhumane conditions during capture and transport. This can lead to physical and psychological trauma, impacting their well-being and potentially causing long-term health issues.

In captivity, even if the mature male spider survives mating through human intervention or doesn’t mate at all, once the male tarantula “hooks out” it won’t be long until it dies of natural causes. So, technically you can catch and keep a mature, male tarantula migrating across the state, but it would be better for all parties if you simply left them alone. LOOK: 17 of the Best Places to Buy an Exotic Pet in Colorado Scroll through 17 of the best places to buy lizards, snakes, tarantulas, and other exotic pets in Colorado. Gallery Credit: Nate Wilde Thousands of Creepy Colorado Tarantulas On the Move This Fall Colorado’s annual Tarantula Migration is now underway, and that means thousands of spiders are actively on the move in parts of the state looking for a mate.