Can dogs have all one gender puppy litters?

No, dogs cannot have litters of all one gender.

Aqui está o porquê:

* genética: A female dog (bitch) has two X chromosomes (XX), while a male dog (dog) has one X and one Y chromosome (XY). During mating, the female contributes an X chromosome, and the male contributes either an X or a Y chromosome.
* Chance: The sex of a puppy is determined by which chromosome (X or Y) the male dog contributes. This means there's a 50/50 chance for each puppy to be male or female.
* Large Litters: Embora seja possível ter uma ninhada com um ligeiro desequilíbrio (um pouco mais de homens ou mulheres), torna -se cada vez mais improvável que todos os filhotes do mesmo sexo que o tamanho da ninhada aumente.

Exceções:

It's important to note that there are rare genetic anomalies that can influence sex determination in dogs, but these are extremely uncommon.

em resumo: It's impossible for a female dog to have a litter consisting entirely of male or female puppies due to the basic principles of canine genetics.