The rabid animal's frothing mouth.    From Wordnet, Princeton University. 

Noun : The play was a charming bit of froth.    From Dictionary.com. 

Verb (used without object) : frothing at the mouth.    From Dictionary.com. 

I realize you are most likely trying to get a reaction, calling it dailykermit, the term frothing at the mouth etc.    From Wordnik.com.  [Think Progress » Former Admin. Official Needs Only Three Words To Explain Manipulation of Intel: ‘The Vice President’] Reference

Note Novak and Lofton "frothing" at him when it comes to defending musician's "words.".    From Wordnik.com.  [Frank Zappa (1986): "On Crossfire"] Reference

Like, you know, calling people cowardly, hysterical, "frothing"... talking about punching people in the mouth.    From Wordnik.com.  [Question About New Avengers #35 | Comics Should Be Good! @ Comic Book Resources] Reference

Thought the deaths were because of snake bites as the children showed typical symptoms - such as frothing in the mouth and vomiting.    From Wordnik.com.  [BBC News | News Front Page | World Edition] Reference

They're frothing over a proposed dime-a-cup espresso tax.    From Wordnik.com.  [CNN Transcript Sep 16, 2003] Reference

She came on, frothing at the mouth, with blood in her eyes.    From Wordnik.com.  [Forty Years a Gambler on the Mississippi] Reference

She was frothing and slumped over before the doctor could see her.    From Wordnik.com.  [Fates of the Stepdaughter] Reference

"What will they do when they have all those frothing magter madmen?".    From Wordnik.com.  [Planet of the Damned] Reference

The atmosphere in 1998 was spooky; the stock market was frothing in 1999.    From Wordnik.com.  [Greenspan's Global Problem] Reference

I'm not unsympathetic to many lawyers like Richard who start frothing about it.    From Wordnik.com.  [CNN Transcript Apr 14, 2007] Reference

If, however, the carbide contains calcium chloride, frothing is liable to occur.    From Wordnik.com.  [Acetylene, the Principles of Its Generation and Use] Reference

The animal stood, frothing a little, his beautiful coat moist, every muscle tense.    From Wordnik.com.  [The Rim of the Desert] Reference

He ran all around the boat, frothing at the mouth, and never said a word to any one.    From Wordnik.com.  [Forty Years a Gambler on the Mississippi] Reference

He rides the city bus back and forth, frothing at the corners and talking to himself.    From Wordnik.com.  [Sic Transit] Reference

Forette was saying to the attendant who had drawn the frothing glass of beer for him.    From Wordnik.com.  [The Golf Course Mystery] Reference

In the suddenly frothing waters of the Argungu, it's a picture of chaos and confusion.    From Wordnik.com.  [CNN Transcript Mar 23, 2005] Reference

Well, I wasn't greeted at the airport in the United Kingdom by anybody frothing at the mouth.    From Wordnik.com.  [CNN Transcript May 2, 2009] Reference

The man's body bore strangulation marks, while the woman was found tied and frothing at the mouth.    From Wordnik.com.  [India Struggles To Stem Rise In 'Honor Killings'] Reference

Its neck cut through the water like the stem of a Viking ship, and it left a frothing wake behind.    From Wordnik.com.  [David and the Phoenix] Reference

"Say, this is rough, all right!" exclaimed Blake, as they found themselves in the boiling, frothing surf.    From Wordnik.com.  [The Moving Picture Boys on the Coast] Reference

In its entangled bottom, a frothing brook leaps and clamours o'er the rough stones in its channel towards.    From Wordnik.com.  [The "Ladies of Llangollen" as Sketched by Many Hands; with Notices of Other Objects of Interest in "That Sweetest of Vales"] Reference

It was the angriest tumult of foam possible, as if the frothing of millions of enraged creatures of the sea.    From Wordnik.com.  [The Knights of the White Shield Up-the-Ladder Club Series, Round One Play] Reference

Still snarling and frothing from the pain Merritt stumbled to his feet and dashed a blow blindly at the other.    From Wordnik.com.  [The Crimson Blind] Reference

I'm not ready yet to become part of your toothless frothing group but I thank you for the bubbling foamy offer.    From Wordnik.com.  [That Particular Diamond] Reference

 I knew they would spill over the falls, the place I love to sit on hot days, with the water sluicing and frothing.    From Wordnik.com.  [S OWN STORY(1)] Reference

At the royal banquets frothing chocolate was served in golden goblets with finely wrought golden or tortoise-shell spoons.    From Wordnik.com.  [The Food of the Gods A Popular Account of Cocoa] Reference

Her tapering masts shining like polished marble in the brilliant sunshine, and the tide fretting and frothing against her sides.    From Wordnik.com.  [Golden Days for Boys and Girls Volume XIII, No. 51: November 12, 1892] Reference

As she careened and plunged, racing down a frothing dark billow, the convict, relieved of his burden, clung to the lower gunwale.    From Wordnik.com.  [Half A Chance] Reference

Next time the ex-pro pundits start frothing at the mouth about a player diving and how "it wasn't like that in my day", consider Nero.    From Wordnik.com.  [Diocles the Roman charioteer runs rings round Usain Bolt's £21m deal] Reference

By this standard, despite what angry, frothing talk show hosts may claim to the contrary, there is relative fairness across the board.    From Wordnik.com.  [Byron Williams: A Good Cigar and a Good Conversation About Tax Cuts] Reference

The animal will be found frothing at the mouth in the field; and if in the stall, a great deal of frothy matter will be seen before him.    From Wordnik.com.  [Cattle and Cattle-breeders] Reference