Quarantine is to isolate the frogs and prevent cross contamination of your other animals. If you have no other animals at all, you probably dont need quarantine (its a moot point). If you do have other animals, and were not even talking about frogs here, but any other reptiles or amphibs, you definitely want to do a quarantine period. Without question. Most vets and long time breeders recommend AT LEAST one months quarantine, preferrably 3. What youre looking for are thin frogs, skin problems, frogs that are "scratching" their backs excessively, frogs that wont eat, and dead frogs. Basically, anything that doesnt look right qualifies as a problem. After a month, find a good vet and have a fecal done. There may be some parasites that the frogs in question are able to deal with right now, but which they may succumb to later on. The vet will prescribe the proper antibiotic, if necessary. Also, keep in mind that it has now been shown that chytrid can survive up to 6 weeks in water without having a contaminated frog even near it. If you by unlucky chance get this, destroy everything that ever got near the frogs, after first leaving it in an oven set to 300 F for an hour or two. Very bad stuff. Thankfully, if you purchase from a reputable breeder and dont buy WC specimens, the likelihood of this "worst case scenario" is low.
Also, even if your frogs seem to be doing well, they could harbor something that could affect any other frogs you may one day get. Hence, the fecal after 1 mo of quarantine.
