As Royce said, I hope they're not living together.

The Pacific Tree Frog has to be male, you are correct. I've never heard of this so-called deficiency briefly turning their throats dark. If you have a reference for this, please post it. It seems nonsensical to me.

The toad is hard to sex from the photos. If I had to take a guess I'd say female but that's a very wild guess.