Firstly, researchers think that dragons should not be in zoos because they are too dangerous as they could break out of the zoo easily.  Also, stone dragons can tunnel underground and escape.

On the other hand some people think that dragons should be allowed to go into zoos because the government can afford to build high tech cages for the dragons and caves for stone dragons.

In conclusion it depends on the type of cages or the zoo and how much money the government has to build cages.  That is why it is a fair argument.