I disagree; bovine scatology is misleading and flawed.
Scatology in itself would mean the study of scat, but nothing is being studied, it's being proclaimed.
Secondly, referring to the species alone with no reference to the sex is ambiguous. There is obviously some significance to having the excrement originate from a bull otherwise the phrase never would have been coined the way it is.
So while you can use any colorful synonym for sh1t all you want, it should be preceded by 'male bovid.' Or just bull.
That is male bovid scat.