Marcos Maidana has rejected claims that he bit Floyd Mayweather Jr's hand during Saturday's rematch in Las Vegas.
WBA and WBC welterweight champion Mayweather extended his professional record to 47-0 with a unanimous decision at the MGM Grand.
But the American's win was tinged in controversy after differing accounts emerged of what happened in the eighth round when the duo had a coming together.
Maidana was bent forward as the pair grappled and Mayweather's left glove was pressed against the Argentinian's face.
"He bit my fingers, so my hand was numb," said Mayweather.
But Maidana hit back at the slur, as he said: "I kept my game plan but Floyd was holding and pushing and the referee only punished me.
"I did not bite him in the eighth round. Maybe they think I'm a dog. I never bit him.
"He was rubbing my eyes with his glove. He had his glove right on my mouth but I did not bite him."
Next up for Mayweather could be a long-awaited showdown with Manny Pacquiao.
Mayweather said: "If the Pacquiao fight presents itself let's make it happen."