Rottweilers have two seasons (or heat cycles) a year, but you should never attempt to breed from the same dog more than once in a year, and never more than two or three times in its lifetime.
That depends on the life of the dog. Ethically, it is not recommended to breed a dog more than three times at the most.
how many litters do hyenas have in a year
how many litters per year does a potbelly pig have
Penguins do not have 'litters', they lay eggs and usually lay one egg a year.
once per year
It is only healthy for a Catahoula female to have 1 or maybe 2 litters a year.
During a Boxer's whole life, she can have two litters a year after the age of around nine months.
Once
cougars have up to 2 litter's a year
1
there are an average of 2 to 8 pups in a Yorkie litter
Around 30, if they get lucky.
They will have no more than one litter a year or every two years.