While Casey Anthony flaunts her new life, love and even a puppy, the chief medical staffer who examined the body of her two-year-old daughter Caylee says that she is positive that the toddler was murdered.

"It was a homicide. Without a doubt," Dr. Jan Garavaglia tells Anderson Cooper on Tuesday's upcoming episode of Anderson when asked what she discovered from examining Caylee.

When questioned if she had come up with a scenario as to what happened, the forensic expert replied: "It doesn't matter, there was nothing I can scientifically prove. I don't ever guess.

Casey Anthony broke down in tears during another day of shocking testimony in the murder trial of her 2-year-old daughter when she heard that Caylee’s bones had been chewed on by wild animals in the woods.

John Schultz, a University of Central Florida forensic anthropology professor, told the jury that two large leg bones that were recovered had “actually been chewed on by animals.”  Casey burst into tears as she heard this testimony.  She was visibly shaken and grabbed tissues and wiped her eyes and face while shaking her head back and forth.  She was comforted by one of her defense attorneys.

PHOTOS: Casey Anthony Laughs In Court

Judge Belvin Perry ended the trial early on Thursday after Casey became “ill,” following the display of gruesome photos of her daughter’s skull that was found in December 2008. She has cried through the last few days, never looking up at the evidence photos and keeping her head bowed.