Questions about example sentences with, and the definition and usage of "Wildcat"

A: "Wildcat" as an adjective describes something that starts suddenly, is maybe not official or not legal, and probably risky.

So here, wildcat banks were small banks that came up across the United States. They were not backed by the federal (central) government, and it was probably a risk to keep your money with them.

A: The man who jumped on the table and starting dancing and flirting with the customers was a real wildcat.
Going on a date every weekend earned her a reputation as a wildcat.

A: × Hybrid cat has some part of the wildcat’s gene, but they aren’t pure wildcat.
✓ A hybrid cat has some part of the wildcat’s gene, but they aren’t pure wildcat.

× The wildcat would not become extinct in the next 10 years.
✓ The wildcat will not become extinct in the next 10 years.

× The IUCN is aware of these, so they said that someday they need to reassess them as a threatened species.
✓ The IUCN is aware of this, so they said that someday they need to reassess them as a threatened species.

× Then, what efforts have been made to save them, and what will be done in the future?
✓ So, what efforts have been made to save them, and what will be done in the future?

× Actually, the pure wildcat is classed as threatened at the national level in many European states, and the wildcat is legally protected in some countries: all hunting&trading of the wildcat are banned by law.
✓ Actually, the pure wildcat is classed as threatened at the national level in many European states, and the wildcat is legally protected in some countries: all hunting and trading of the wildcat are banned by law.