Yes I do believe that to be true in alot of wild caught species lizards or snakes. but this started over Redtailed boa's diet and in my experience once a baby or wild caught adult is eating well on a regular diet you can change it around a lot and give great varities once eating they seem to go for size and heat more than smell . so I could feed them just about anything as long as it was the right size and heated to about 99 to 105 degree's . when I feed a large group I have to stop in the middle and reheat there food or the last one's will not eat cause it's cold " but " there is 8' male that only eats roomtemp jumbo rats that have unthawed over night in a bowl next to his cage he wont take them any other way but that's more of an exception than a rule.