Most females will only allow a male to mount them if they are in heat as this is the time when they are most fertile. Although some females will allow a dog to mate them whilst they are not in heat, there is less chance of the female getting pregnant.
The male dog may try and mount the female but if she is not in heat they cannot produce puppies
Rarely. Usually male dogs won't want to mate with them because they won't smell the odor female dogs give off during heat.
No
Male animals usualy do not mate with other males but many mythological animals don't base their sexual culture on gender. Even dogs occasionally mate with the same gender. It is not uncommon for two of the same gender to mate.
No. However male dogs can still show interest in them even if they are spayed.
Whether that is the reason or not, is indefinite. However, the male has hormones in his urine that the female cat responds to, and these could trigger her mating response. no, don't they sniff each other out? The female emits pheromones when she is in heat that the male cat responds to. So the order is, the female is in heat and THEN the male sprays to mark territory.
Dogs whine for a lot of reasons. This could be one of them. Dogs can tell by the smell when another dog is in estrus, so an intact male dog might very well whine to get out to visit a nearby female in heat. A neutered male probably won't care much.
No. Male cats are always ready. They just need to be near a female that's in heat to trigger their desire.
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.
When the female is in heat.
Not common, but it is possible.
It could be multiple issues. If there is a female, even if she is not in heat, they could get protective over her, or if they feel threatened by this other male dog they will become aggressive.
Male ferrets (and mammals) don't really ever go into heat seeing as they don't have a uterus and can't go through their menses. However, male ferrets will become more aggressive when around a female in heat. Especially when that female is another ferret.
No she cannot be brought into heat by a male being around her. She will cycle every 6 months on average. If she is near another female in heat, that might bring her into an earlier heat.
Dogs aren't always regular with their seasons. Also, female dogs can have a heat cycle triggered by smelling another female in heat or by sensing a male is around. Even breeders will bring in a vet at times. If your dog is bleeding then your calculations are probably out and your female is in heat. Whether she is pregnant is another matter and it would wise to have a vet examine your pet.
Male animals usualy do not mate with other males but many mythological animals don't base their sexual culture on gender. Even dogs occasionally mate with the same gender. It is not uncommon for two of the same gender to mate.
When the female is ready the male will know.
Separate them, until the female's heat is over.
Male cats do not go int heat, neutered or otherwise; heat is a characteristic of the female oestrus cycle. Even a properly neutered male may still respond to a female in heat, out of habit. If a cat has learned to spray before he was neutered, he very likely will continue after he has been neutered. It likely will be less frequent, but it can still happen.
Male dogs don't get in heat, but if they smell a female in heat they can get real frantic in their effort to get to her.