У вашего броузера проблема в совместимости с HTML5
After about a weeks time, I notice that the female is in the male side more often and the male is not as aggressive towards the female as before. He chases her from time to time but looks more interested in pairing up with the female. I remove the divider completely and observe for at least 1 hour. If he gets too aggressive then place the divider again leaving the opening for the female o enter and leave the male side......but in this instance......things look good so far.....they seem to be getting along.