The Germany time line is quite correct for the northern hemisphere My Singers begin heat cycles in August and the second a few months later and sometimes a third end in mid winter I have a male pup from a third heat cycle that was born in early spring like a wolf or coyote This breeding only occurred because I had them separated for the first 2 cycles thinking them over then put them back together Then the third happened with pregnancy as the result 3 Heat periods in 6 months or less is quite remarkable for any canine