Senate rival accuses Dr Oz of killing over 300 dogs as medical researcher

Republican condemned by John Fetterman as puppy killer' after reports allege Oz oversaw animal deaths between 1989 and 2010

An already over-the-top and acrimonious US Senate race in Pennsylvania has escalated after John Fetterman - the Democratic candidate - accused his Republican opponent, the celebrity physician Dr Oz, of having killed more than 300 dogs.

Calling his rival sick" and a puppy killer", Fetterman cited reporting published on Monday alleging that Mehmet Oz oversaw numerous animal deaths while conducting medical research at Columbia University.