Yes, a dog can have an odd number of puppies in a litter. The number of puppies is determined by various factors, including the breed, the health of the mother, and genetics. It's not uncommon for litters to vary in size, resulting in both odd and even numbers of pups.
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Usually a father dog does not know his pups
Your gonna have to feed the pups yourself if you don't your pups will die. If the dogs breast are swollen then your dog is sick.
The larger the dog the larger the litter
yes
no if you have 2 females and ones going to have pups the other female will mate (if she can) and then they will share pups i know this as it has just happened with my dogs
The exact number is hard to tell unless you take her to a vet, but the larger a dog the more pups she is likely to have.
Big dogs can have up to 8 or 9 pups
my dog had pups and it was 4 but now i have 2 can not find the other 2.
Generally the Mom-dog nurses the pups for 10-12 weeks. It will depend on when and how much other food is introduced to them from the owner, and again the breed itself and number of pups whelped.... not to mention the Mom-dog's attitude!
Pups/puppies.
Take her to a vet.