The Haram food are only found in the Quran and Sunnah of the Prophet. Whatever is not mentioned there is halal as far as Islam is concerned. However some Madhahibs have forbidden certain food while others permit it. A muslim may decide to avoid food forbidden by his madhhab but at the same time must know that eating such food by another muslim or even himself is not an act of sin..as no one can forbid what Allah and his Prophet make Halal or vice varsa. So Ummi, eating reptiles whether poisonous or not is permitted in Islam...now to eat or to reject the meat depends on the muslim in question. Just like the Prophet was presented with lizard (

Arabs do eat lizards..funny isnt it?) in Volume 7, Book 65, Number 312 of Sahih al Bukhari: He withdrew his hand. Khalid asked, "Is it unlawful to eat?" the Prophet said, "No, but it is not found in the land of my people and that is why I do not like eating it." So Khalid started eating (it) while Allah's Apostle was looking at him. Anther example here is the flesh of the horse..which is not allowed in Maliki madhhab though is permitted by others.
I will present the verses of the Holy Book listing Haram food...Any food that is not mentioned there is considered to be halal except if it is forbidden in Sunnah. an of a food in that category is the flesh of a Donkey (not Zebra). although is not mentioned in the Quran, the Prophet forbids his followers from eating the flesh of Donkey..in Sahih al Bukhari Volume 4, Book 52, Number 234: Narrated Anas: ..."Then we found some donkeys which we (killed and) cooked: The announcer of the Prophet announced: "Allah and His Apostle forbid you to eat donkey's meat." So, all the pots including their contents were turned upside down".
I will also try and see that I presented Hadith from Sahihal Bukhari that talked about Haram and Halal Food.
Other foods are classified as Makhruh, neither Halal nor Haram. Just as the Prophet said .."Haram is clear and Halal is clear..and in between there are some issues
mutashabiha" Example you may give the flesh of Lizards..since we want to emulate the Prophet and he didnt take it..then it is advisable for a muslim not to take it..EVEN THOUGH EATING IS NOT HARAM. (

Hausas do give it to young ones as a medication for cough).
another example amy include enzymes, glycerin and other foods of doubtfull origin.