Bummer. From what I know of rosies, that seems a bit unusual. Normally I hear about them being garbage disposals who will eat anything they can fit in their mouth (up to and including decor and human fingers in some cases 
). But every species has its outliers. 
Hopefully Merck (love the name btw) will get with the program sooner or later! In the mean time…well, at least he’s pretty.