Assertion: stallion's mare | /r/AtLocation | heat
Facets:
Source sentences:
text: These stallion-like horses can be a major source of frustration and cause aggravation to mares, which are in heat, and a danger to their handlers.
text: A mare that is in heat will generally tolerate a teaser (although this is not always the case), and may present herself to him, holding her tail to the side.
text: When the mare is in heat, the person inseminating introduces the semen directly into her uterus using a syringe and pipette.