I have two African Bullfrogs, and I wish I could say I successfully "guessed" the sex of both and nailed it. Unfortunately, I did guess, and then John took one look at my pictures and knew instantly that I was wrong! Ha! And you might think that because I have one male and one female, I would be able to be of more help on this posts, but alas, I am not. However, my female, while she does have a bit of yellow by her arms, her throat is a definite white. Between that (and I know it's not much, but hey, it's all I've got!! ) and the fact that John says it's male, I would definitely lean towards male. Either way, gorgeous frog and congratulations!