I was told by my vet that they don't usually go into heat, it depends if you have a female on her own. I have a female Russian dwarf and she lives on her own and the vet said she wont go into heat.
how do I know if my female dog is in heat?
When the female is ready the male will know.
Male cats don't go 'in heat' - only female cats do.
Yes
I DONT KNOW...probly not, considering their cats not humans
You'll notice a tiny spot of blood on her vagina.
of course not.it's totally normal for a female cat to be in heat.
Cats are notorius for having false pregnacies.
You don't, unless you know the female is in heat and ready to mate. Otherwise keep them apart at any other time.
Yes, a female no longer goes into heat if they are pregnant.
Sigh of a female human being in heat
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.