Commander Biden, President Joe Biden’s family dog, bit US Secret Service personnel in at least 24 incidents at the White House and other locations, according to new internal USSS documents obtained by CNN.

That number does not include additional incidents CNN has previously reported involving executive residence staff and other White House workers. But the new documents, obtained through a Freedom of Information Act request, reveal the extent to which the situation had become a serious workplace issue for the hundreds of staff supporting White House operations, and how agency personnel changed their habits to avoid being injured by the German shepherd.