Bay seniors who object to cute cat videos are encouraged to avoid Acro-cats, a feline circus at the Southside Theater in Fort Mason on May 22-25, 29-31 and June 1 at the Southside Theater in Fort Mason. These cats, all orphaned, rescued or strays, have been clicker-trained to walk tightropes, jump through hoops, ride skateboards, even perform in a band with a chicken on tambourine and a groundhog on gong. One hour. $24. No, they don’t sing “Memory” from the Broadway show.