Any animal as a mount.

[Snor]

a.....wait for it.....mosquito ^^ it will allow me three awesome things:

1. fly
2. super fast reflexes (we all know how annoying it is to chase a fly)
3. being able to sucking people dry (their blood not their money...we have lawyers for the latter)

 

[Poopster]

A Flea! it can jump anywhere!!

 

[The Boy in the Hat]

A Gatling camel called Barnaby!
Failing that, a robot unicorn.

 

[SMILEYkyle21]

A squid so as I charge into battle I could play this song; www.youtube.com/watch?v=zyP20Wa0gDY
Whilst screaming 'OH SH*T... SQUID ATTACK!!!'

 

[Mr.Napier]

A bear, giant boar,

 

[theklng]

a cockroach. not giant or anything. just one, single cockroach.

 

[The Diabolical Biz]

Kraken, for obvious reasons

Spoiler: Pic spoiler'd for gargantituity

http://www.lair2000.net/Mermaids_Retreat/Research/kraken.jpg

 

[tharglet]

Spider sounds like a good idea... I'm not scared of them, but plenty o' folks are

Oh, and the obligatory dragon, failing that possibly a lizard ^^

 

[latenightapplepie]

A giant eagle for sure.

 

[Anti Nudist Cupcake]

Manbearpig!

 

[Bugerion]

P-p-piranha with or wolwerin http://www.sustainabilityninja.com/wp-content/uploads/2010/03/wolverine-last-michigan.jpg

 

[My name is Fiction]

"I'm not the only one that wants a chinchila!"
their fur is so soft!
*HighFive*
"Probably the new mexico chupacabera in second."

 

[Shirokurou]

A giant kitten, not a cat, but a GIANT KITTEN.

 

[binvjoh]

A panda.

http://static.funnyjunk.com/pictures/4cf79389_f6e2_a531.jpg

 

[GamemasterAnthony]

This guy [http://pokebeach.com/content/tcg/advent-of-arceus/arceus-1280.jpg]

By the way...for those who posted the Robot Unicorn, thank you SO @!#?@!ING MUCH! I now have "Always" by Erasure stuck in my head again! GRAH!!

 

[Verp]

Kaprosuchus.

Spoiler

 

[childofbodom]

On land: Usain Bolt
In water: Michael Phelps
In air: Seagull

Any questions?!

 

[Terminate421]

I win, everything!!!

 

[Prof.Wood]

Cerberus
If I can get it's three heads to agree on a target then I will destroy it.
Also when not in use it's the worlds best guard dog.

 

[Kris015]

http://wiki.guildwars.com/wiki/Kralkatorrik <- Beat THAT. I dare you.