SNDF imports WC adults and/or hand-picks and apparently quarantines frogs from other imports (I believe they also sell some CB as well), pretty safe bet, usually healthy but specific locale info is not usually attached to the frogs.
Other importers such as Strictly Reptiles and the people they sell to (Underground Reptiles, etc) are the ones you need to be careful of, they deal with so many different types of herps that frogs are not really a huge priority for them.... their WC's rarely come in with any concrete locale info and are often stressed or unhealthy (hence the cheaper pricing).
For wild caught frogs, they are caught whichever population that is in demand and can be exported (hopefully legally...) Frogs that are imported from places other than South America (like from Europe) are not typically not wild caught and have been in captivity for awhile.Title Says it all. Are imports caught in the wild, and where? How do you know if the frogs are healthy and not poisonous? Or are you just taking a chance with them.
Careful...that may not be entirely accurate, see:The frogs that you can purchase from the sponsors on this site are captive bred and aren't poisonous.
The site will list if they are captive bred.
In the wild they eat things that make them toxic and in captivity they can't eat these things so they are poisonous.
No one is really sure why lol.
Always go with captive bred cause these lil guys are pretty deadly.
Actually there is pretty good evidence as to why and the sources of the toxins.. for example oribatid mites Oribatid mites as a major dietary source for alkaloids in poison frogs and schlerobatid mitesIn the wild they eat things that make them toxic and in captivity they can't eat these things so they are poisonous.
No one is really sure why lol.
This is overhype bordering on BS.... out of all of the species of dendrobatid frogs there are very few that are "deadly" (and all but one potentially Coleothesthus inguinalis as it has a tetrodotoxin) of which are in the genus Phyllobates).... in fact with a number of species, ressearchers tasted them to see if they were toxic or not as the toxic alkaloids taste bitter... If I have to, I can dig up some of Daly's work on that. As an example the bitter taste is discussed briefly here but supplies the relevent citations... http://onlinelibrary.wiley.com/doi/10.1111/j.1469-7998.2010.00732.x/fullAlways go with captive bred cause these lil guys are pretty deadly.