I was thinking about supplementing the diet of my garter with frogs.
The problem is that all amphibians in Denmark are protected by law, and I will not be part af those who don't care...

I was looking for cheap frogs to buy, but I am in doubt wether which species are poisonous and which are not.
I am thinking of feeding one of following species to my snake, but does anyone know if they are poisonous to garters?

Occidozyga lima
Xenopus tropicalis

and a salamander:

Cynops orientalis