Love was, sadly, not in the air at Tokyo's Ueno Zoo on Friday. The facility announced it will resume public viewing of one of its two giant pandas following a failed mating attempt.

The public viewing of Shin Shin, a female panda, and Ri Ri, a male, was halted Thursday in hope the two would conceive after hormonal analysis indicated Shin Shin was in heat.

The zoo said Ri Ri will be put back on view from 9:30 a.m. on Saturday. But Shin Shin is currently undergoing physical examination and is under anesthesia, so she will be available for viewing at a later date.