create implication fertilization -> impregnation
Per tag descriptions, all fertilization is also impregnation, and there should be no fertilization -impregnation.
However, one potential issue with this is IVF, species that lay eggs unfertilized, etc. - fertilization not taking place within a womb or shown outside this context, e.g. post #2127347.
Thoughts?
EDIT: The tag implication fertilization -> impregnation (forum #146914) has been rejected by @Hillside_Moose.
Updated by DanbooruBot