I'll let you decide for yourself however, keep this little issue in mind. Since it requires more energy to separate hydrogen from oxygen than would be gained from burning the hydrogen produced in this method, the concept of such a device is often stated to be in direct violation of the first and second laws of thermodynamics.
There was, if I recollect, a guy drove his wagon in to town full of an elixir. For only $1.00 you could be free from dropsy, shingles, ague, catarrh and effluvia among many discomforts.
I got 60mpg driving my MINI down Pikes Peak! Now, if I can just drive downhill all the time, I'm gonna' save a bundle. BTW, it smells like poo, to me. CD
Can't you just take a big sniff and tell from that which type of animal the poo came from? I do not recommend the 'dipping your finger in it and taking a taste' method.