Help me identify a South African frog

[CuriousB]

Hi!
After three hours of searching I have identified the frog! It is a Bufo Gutturalis! I have attached a picture for you to look at. I got it from the website "petlifeforms.com". I think the reason I struggled so long to find it is that all the pictures of Bufo Gutturalis that I had come across do not have the red markings that are indicated on the picutre. Do the markings signify gender?
But thanks Tony the red toad was close.
My next mission is: I need to make my garden unnappealing to these frogs without hurting them. I have had to drive four frogs to the river in a bucket already! My fear is that my dog finds them before I do - she doesn't seem to have learnt her lesson from her hospital visit and she loves playing with the frogs!
Is there anything I can put in my soil that will repel (not harm) these frogs?
Please help.
Regards,
B