I found this article through an op-ed in today's NYT, which is a cute story in itself.
http://www.nytimes.com/2011/02/22/opinion/22buckley.html?_r=1&nl=todaysheadlines&emc=tha212The link in the op-ed leads to a story about the death of Kennedy's dog, Splash, and there is this about Biden:
The death of the 13 1/2-year-old curly-haired canine is eliciting fond tributes, fit for the passing of such a famous fixture of official Washington. Splash, after all, hobnobbed with Elton John, leapt around the Oval Office, and once growled at Joe Biden and Paul Wellstone when the senators wouldn’t stop talking during a Democratic caucus meeting.
snip
Paul Sarbanes, the Maryland Democrat, was so charmed when Splash barked at Biden and Wellstone that he made the dog an honorary member of the Senate Democratic caucus.
http://www.boston.com/news/local/massachusetts/articles/2010/12/24/ted_kennedys_beloved_dog_splash_dies/