Serum progesterone concentrations from captive, western, coyote females in 2012.

<p>Animals in bold were treated with an Ovuplant subcutaneous implant on 3 January. The others were used as controls. Four coyotes (*) were artificially inseminated on 17 January (60% progressively motile sperm) and 19 January (30% progressively motile sperm). One coyote (<$>\raster(70%)="rg1"<$>) was confirmed pregnant with a single fetus and later judged to have resorbed one.