A brief digression.
In the early 1990s, I traveled to Calaveras County in central California to conduct an environmental assessment of a large gravel pit/processor on behalf of a local company.
This was not your typical small pit opened temporarily for road construction. This was a full-time, fully automated facility intended to supply a significant percentage of the aggregate needs of the central valley.
One of the items of environmental interest I inspected were the sediment ponds below the wash plant. These ponds were huge, full of cattails and other wetland species.
That is where I saw these giant leaping frogs. They were everywhere. And, then it all hit me with the Mark Twain connection.
That was when I resolved to have frog legs for dinner. Where a better place, than Calaveras County? So I went to a local restaurant, and there they were on the menu. When I inquired my server if they were local, she confessed that the locals had depleted the native supply down to next to nothing, so these were farm raised out of state. Might have even been from South America.
Oh well. They were pretty good, but not worth ordering again.