I finally caught a huge toad near the pool pump today, with the help of the gardener we scooped it in a bucket and put a lid on it.
It very likely is the one that killed Meika, and I am relieved to have it gone, but I know there may be more, so I will keep looking. It's hard to believe that one lousy toad could kill my baby Meika..... and made me mad and crying all over again.
Please warn people to be aware of these, especially in South Florida, Australia, and Hawaii. There is more info here:
Poisonous Bufo Toads Can Kill Your Dog | For The Love of My Dogs