Kangaroos pronk.    From Wordnet, Princeton University. 

Rep. William Cummings (D-VA) defends his use of the slang word "pronk" as a legitimate catchphrase.    From Wordnik.com.  [WN.com - Articles related to Withdraw Nuclear Liability Bill: BJP] Reference

February 24th, 2009 at 5: 10 pm pronk at 16 nails it.    From Wordnik.com.  [Matthew Yglesias » Obamacare: Now With Mandate] Reference

Ai is a springbok wiv mai tail in teh air pronk pronk pronk!.    From Wordnik.com.  [The problem with your gene - Lolcats 'n' Funny Pictures of Cats - I Can Has Cheezburger?] Reference

In Hindeloopen (Friesland) one or two beds in the living-room are kept as 'pronk-bedden' (show beds).    From Wordnik.com.  [Dutch Life in Town and Country] Reference

The warthogs are starting to make friends, the giraffes like me more, and the springbok pronk everyday pronking is when they bounce around as high as they can, it's awesome!.    From Wordnik.com.  [Animal Planet: The Purest Thing I Have Ever Experienced] Reference

Espying and taking nonchalant note of the ram's challenge, he vouchsafed to give forth a midrange snarl, whereupon the suddenly paralyzed ram froze at the end of an advancing pronk, stood tottering on all fours for an instant or two, and proceeded to keel over onto one side in a dead faint, all four legs locked sideways and straight, parallel to the ground.    From Wordnik.com.  [Into the Thinking Kingdoms]

The springbok (Antidorcas marsupialis) gets its name from its characteristic jumping display - pronk in Afrikaans.    From Wordnik.com.  [Muti] Reference

Or we should accept it as an animal that weathered the changes in our nation, still holds its title, and continues to pronk along, but is now representative of a unified nation.    From Wordnik.com.  [News24] Reference

'pronk-kamer' ( 'show-room'), which is not a bedroom, but a kind of parlour.    From Wordnik.com.  [Dutch Life in Town and Country] Reference

I’m still betting on ‘no mandate’ in the short run of any Obama proposal or anything Congress puts together. pronk Says.    From Wordnik.com.  [Matthew Yglesias » Obamacare: Now With Mandate] Reference

Who here even knows what pronk means?.    From Wordnik.com.  [Warren Ellis] Reference

Pronkity pronk pronk pronk. jwz - 05 Apr 10.    From Wordnik.com.  [Warren Ellis] Reference

Pron pronk pronk!.    From Wordnik.com.  [The problem with your gene - Lolcats 'n' Funny Pictures of Cats - I Can Has Cheezburger?] Reference