article_snippet: The UK's only female giant panda Tian Tian has been artificially inseminated for a third time after two previous failed attempts.
article_snippet: On the two previous occasions keepers have inseminated Tian Tian Tian Tian has failed to produce a panda cub.
article_snippet: Tian Tian in Tian Tian enclosure: Tian Tian was artificially inseminated today with an attempt at natural mating to follow .
article_snippet: On the two previous occasions keepers have inseminated Tian Tian Tian Tian has failed to produce a panda cub .
article_snippet: Both pandas remain extremely interested in one another, but as Tian Tian transition to peak was so rapid it was a priority to move straight to artificial insemination first. '
article_snippet: As each individual panda is different and each individual panda pattern can vary from year to year, this is why we start hormone monitoring via urine samples so early and continually observe we female via CCTV as the window approaches. '
article_snippet: Panda reproduction is a notoriously tricky process, with females only ovulating once a year.
article_snippet: There were hopes that a panda cub would be born last year when Tian Tian became pregnant following insemination.
article_snippet: : Each individual panda is different and Each individual panda pattern can vary from year to year which is why producing a cub can be so difficult .
article_snippet: Panda reproduction is a notoriously tricky process, with females only ovulating once a year.
highlights_snippet: Pandas notoriously difficult to impregnate with ovulation just once a year .
  