Congress president Mallikarjun Kharge’s dog jibe led to heated exchanges on Tuesday in both Houses with BJP seeking an apology from the Leader of the Opposition in Rajya Sabha and dubbing him as a “rubber stamp” chief. Kharge’s remark at a rally in Rajasthan where he said that while his party helped the country get Independence, BJP did not lose even a “dog” for the nation, prompted members of the saffron party to target Congress and him as soon the proceedings started in both Houses.