
Hi Mark. It is possible for a mating to take place through a mesh fence. Whether it's likely or not depends on the dogs concerned & whether she was actually ready for mating at the time. If it's over 2 wks ago, it's too late to do anything now if the owner wants to breed from her later - just wait & see. If she did have a cross bred litter now it is absolute nonsense to say it will affect future litters - that's not just an old wives tales it's an ANCIENT wifes tale!!!
HTH