Maybe, depending upon whether or not they have the same father and what breed the dogs are. However, even if the male and female are registered, their offspring cannot be registered. The puppies will have a higher chance of genetic defects, and any further inbreeding would exacerbate this in future generations.
not at the same time but in a litter different pups can have different fathers even though they were in the SAME litter
Yes
No, males don't go into heat, Males generally mount but wont work if the female is not in heat.
it can happen. This has even happened with females who were fixed. However, a female dog MAY still be in heat even if she is no longer bleeding. Heat cycles usually last 3 weeks. Be sure to keep the female away from any intact males for her entire cycle
Yes, they come into heat but on an erratic cycle. They are only sterile because of the chromosomal difference between themselves and the available males. Occasionally female mules DO produce offspring. They still produce estrogen and ovulate. They just most often do not conceive.
The best way to recognize when your female dog has her first heat cycle is to spot the drops of blood that will come from her rear. Her female parts will also appear swollen.
When a female cat is in heat it is called Estrus --This is the name of the cycle. The name of the cat itself is a queen. == ==
3 weeks
Yes
You can get these from Drs. Foster and Smith on the web for females and males.
Any female dog in season/heat will attract males from miles around. The smell of a female in season is very potent and it signals to males that she is ready to mate.
A donkey's heat cycle can vary since no two donkeys are the same. However, the average heat cycle tends to be anywhere between 23 and 30 days.
No. Only a male can impregnate a female. No female mammal of any species can get another female pregnant. For mammals that have a "heat" cycle, being in "heat" is required for pregnancy by a male. If such a mammal (a dog for instance) is not in heat or doesn't have a male partner, pregnancy is not possible.
Female rabbits don't go into heat. Ovulation in rabbits is triggered by fornication, so they don't have a menstrual cycle.