Dilute some red brown (or just brown) with water (I’m assuming your table has a natural dark finish) and apply it to the table with a brush. It should cover the yellow traces. If it doesn’t work, you couldn’t find a cat and there’s no way you can prove Hussein did it, go to furniture store and get a dinning table and that sofa your wife has always wished. No complains guaranteed!
NEXT TIME PUT DOWN A SHHET OF PLASTIC FIRST. BY THE WAY, ARE YOU DOUBLE JOINTED? THEN THIS WOULD BE A GOOD TIME TO KISS YOUR A_S GOODBYE. THE SIGN ON MY FRONT LAWN READS; “FORGET THE DOG. WATCH OUT FOR THE BITCH IN THE KITCHEN.” I’M SO FUNNY I CRACK MYSELF UP.
Before you do anything is the table varnish or urethane? If it is more than40 years old it is likely varnish, younger that that it is anybody guess. If it is varnish very fine steel wool with a little thinner soaked into it should do the trick, by very fine I mean 0000 at least. Then a lite coat of varnish to re-seal it should do the trick. If it is urethane soory dude but short of re-finishing the whole table top you are cooked!
Enjoy the couch!
Cheers! McCaber