stags

[c beckett]

what is the name for a stag with no antlers?

[Quizmonster]

In British usage, a brocket is a red deer stag in its second year. At that stage, all it has are short, spiky 'horns' rather than the tree-like antlers it will later develop.

[Richard Head]

An antlerless stag

[Clanad]

Here in the U.S., a young male deer or elk with only small horns emerging is called a "spike"... similar to Quizmonster's description...

[gen2]

According to this website , a brocket is just a male calf.
A stag without antlers is called a hummel.

[gen2]

Further to my post above, if you live in the West Country it could also be called a Nott.

According to this:  
A Hummel is a stag without antlers, also known as a �Nott� in the West Country.

[Quizmonster]

Here's a reference from 1425 with appropriate spelling: "...the fyrste yere he is a calfe, the secund yere a broket, the thrid yere a spayer..."
It's clear that the word 'calf' can be applied to the young - of either sex - of all sorts of creatures...even including whales! The definition in my earlier response was the one provided by The Oxford English Dictionary.
The earliest recorded use of the word 'hummel' to describe an antlerless stag dates back only a hundred years, though it was used for hornless cattle centuries earlier.
I'll stick with history and TOED as my sources, though if you are looking for and adult stag without antlers - ie one that is, effectively, maimed - 'hummel' is probably the way to go.

[landie]

What do you call a deer without eyes?

No eye deer.

[burnhal]

oh dear- was waiting for that joke above to appear! so we move on to a dead deer with no eyes- still no idea!!