In chapter 11, Mrs. Tibbits and Ben just get back from toad watching because it was raining. Mrs. Tibbits tells Ben the reason why her sister-in-law wants to sell the house. Developers want to purchase the property to build on it. Ben realizes this is not good because the Spadefoot toads are endangered and if developers indeed purchase the property and build there, the spadefoot toads will no longer be able to lay their eggs and will probably become extinct. Ben is trying to hatch a plan to help Mrs. Tibbits in this situation.
In the chapter, Ben realized that is was not good for the endangered spade foot toads for the developers to purchase the property and built it at a place that was inhabited by the species. This was going to have a negative impact on the lives and existence of the spade foot toads. For example, the production of the population would be hindered. This would result in an extinction of the species.
