Yes they are allowed if you want pups but if not keeps them on a lead.
Like Females we have are period and female dogs also have there period every six months.But there is called heat not a period it usally last up to 3 weeks.
female dogs can have there preiods as early as 7 months
You can get these from Drs. Foster and Smith on the web for females and males.
No, males don't go into heat, Males generally mount but wont work if the female is not in heat.
No, only female dogs can go into heat. Males can mate at any time of the year.
When the female's egg is fertilized.
they have periods but then it is called going into heat
I would say that people tend to go for female dogs more because sometimes they have maternal instincts, just like a woman would; but I have nothing against male dogs, and they can sometime be more caring than female dogs. I would also say that people go for males because females get to where they have a period and could possibly have puppies. When a female dog has her puppies you have to be sure that the female is a good dog that doesn't bite before you touch her puppies. Your dog has to trust you before you even get close to her puppies.
Because there is more males vying for a certain female and sometimes males will fight over a female and on the odd occasion the female may fight a male. Like human females we do have our preferences. LOL
Yes with larger dogs there can be a smell.
DES is Diethylstilbestrol which is an estrogen (hormone). It is generally used for urinary incontinence in female dogs or for prostate enlargement in males.
dogs are actually infertile and dont get there period until after relations