LOL…my B hides her rawhide chew everyday...she doesn't chew on it just hides it...what is she waiting for?? I have a bag full of them for her...silly girl.
You can always check to see if the plant is poisonious or not on the ASPCA's website, they have a list of toxic things to dogs and if you are still concerned you can call the animal poison control phone number and speak with a vet on duty (know this from experience with my Fajita vegtable eating Puggle 😞 )
Corky's sometimes uncurls when he's sleeping and sometimes when he is comfortable. I can always tell if he's really OK with someone. If his tail is uncurled, they're OK by Corky!