When used as food, deer flesh is called this
Venison
He & Ginger Rogers tripped the light fantastic in 10 films together, including "The Gay Divorcee"
Fred Astaire
Vixens are female foxes; like cats, they have vertical eye pupils & some have this type of claws that can be pulled back in
Retractable
In 1680 Gottfried Kirch became the first person to discover a comet using this kind of telescope
a Refractor Telescope
This grandson of Italian immigrants was elected the 107th mayor of New York City on November 2, 1993
Rudolph Giuliani
His name finishes the line, "I do not like green eggs and ham. I do not like them..."
Sam-I-Am
The Pampas deer lives in the tall-grass regions of this continents plains
South America
In 1948 dancer & choreographer Alicia Alonso founded the national ballet of this island country of her birth
Cuba
A mother vixen bears young called pups, cubs or these
Kits
In 2014 this spacecraft named for an ancient multi-lingual stone became the first to orbit a comet
Rosetta
Shortly after his death, eerie stories told of this actor's ghost haunting "Falcon Lair", his Hollywood home
Rudolph Valentino
"If I can't find a reindeer, I'll make one instead", said this character--so he called on his dog, Max
The Grinch
The largest kind of this largest member of the deer family lives in Alaska
a Moose
He co-wrote & directed "All That Jazz", a movie based on his life
Bob Fosse
In preparation for giving birth, a vixen will enlarge an abandoned burrow of another animal to make one of these
a Den
Most comets round the sun via this odd, elliptical orbit, a term that could apply to your unusual grandfather
Eccentric
You'll find this body of water in the eastern part of Kenya's Rift Valley
Lake Rudolph
This turtle was king of the pond at the island of Sala-ma-Sond
Yertle the Turtle
A deer's stomach has this many chambers, like a cow's
Four Chambers
He's often credited as the man who saved tap dancing 
Savion Glover
That vixen may look pettable but be careful--some foxes are carriers of this disease, AKA hydrophobia
Rabies
In 2005 NASA launched a comet mission named this, like the title of a film in which Morgan Freeman was the president
Deep Impact
The award-winning Rudolph seen here holding 2 Olympic medals and wearing a third

Wilma Rudolph
In the jungle of Nool, he murmured, "I've never heard tell of a small speck of dust that is able to yell"
Horton
Contrary to popular belief, this deer provides little of the livelihood of Europe's Lapps
the Reindeer
Praise be to Rudolf Nureyev & more recently Michael Flatley, who both had this noble nickname
Lord of the Dance
The smallest vixens belong to the smallest fox species, the fennec, usually found in these ecosystems
the Desert
A comet often has two tails--one made of dust & one that glows blue & is made up of these electrically charged gas molecules
Ions (or Plasma)
Bravo! This man was the general manager of the Metropolitan Opera from 1950 to 1972
Sir Rudolph Bing
This boy from feudal times got into trouble for failing to doff his hat
Bartholomew (Cubbins)