I don't think there is to many that become picky but you get the odd one that will. My 2 males couldn't really care less were stuff is, as long as they have something to hide under and they are being fed they are happy. They have there moments of trying to bite or grumpiness but that's only if they really don't want to be bugged. But ya the female is picky, grumpy and very aggressive. I have hard time picking her up if it is night time and she is fully awake, she has made me bleed 2xs from biting me now and the second time she really got me and it didn't feel all that great. If I need to move her for some reason or another I do it during the day while shes sleeping, usually by the time she wakes up to really realize whats going on I have already put her down. And for there doing things unusual you mentioned, they aren't a very active frog so when they start jumping around like crazy or doing something off its a good reason to be a little concerned and good indicator something is bothering them.