What do you think??

[Tom Highum]

Yes it is common in the US not to be able to sell native wild life and to have restrictions on the amounts. In Colorado it is you can collect 4 of one species (select species) per year and can have a maximum of 12 total wild caught animals. Though this doesn't include snappers of tiger salamanders because they require fishing licenses to capture.
Some states have problems with invasive bullfrogs eating native frogs.

[Kurt]

Arizona and California come to mind.