A 'Stag' doesn't bear offspring, because it's a male deer. It's the 'Doe', that bears the offspring, which is commonly called a 'Fawn'.
A stag is an male deer.
A hind is the female.
A fawn is a baby deer.
piglets.
a buck
it's a calf.
When it comes to natural selection, only the strongest stag beetles survive to reproduce. During reproduction, they pass their genes off to the offspring.
A patronus Spell: Expecto Patronum!
During the rut, a stag will attempt to gather a harem of breeding females. Other stags will attempt to gain control of this harem. Therefore, a contest ensues between the master stag and the contending stag. It is a case of the best stag will win and gain or keep control of the harem and ensure they alone will mate with the females and pass on their genes to future offspring.
Offspring of cattle are calves (singular: calf).
Calf is what they call an offspring of an antelope.
calf
Calf
Chick.
gosling
peachicks
an eaglet