A number of years ago, while being a rookie Tower Ctler, a F27 went around.
I was curious as to why and the pilot politely reported " Python crossing runway". Succeeding aircraft was informed and was cleared to land after python had
vacated runway. Both me and the 2nd acft thanked the 1st guy for that immediate info. BTW the python ended up in someones kitchen that nite. It does help sometimes. Those were the days of pioneers, caribous and F27s etc etc etc. Today I am an Approach Radar Ctler and I just wait for the Crew to let me know if at all they want me to know. My 2 cents. Cheers