scientific studies, over the 30 years I have been dealing with reptiles, I have learned a few things - some by luck, some by practice. I have performed several experiments to get animals to feed. One of them is the use of different colored animals.
Example 1:
WC adult female would not eat anything given to her. I tried white mice and white rats for about 8 months. Next, I try a brown hamster and it was hit instantly. Well, hamsters are expensive, so I go back to a white rat. No interest. Now back to another brown hamster and again it was hit instantly. At this point, I form a question: is it the scent or the color. I take a white rat and put it in hamster shavings for one day and put it back in the cage. Nothing. Next, I put a black rat into the cage and BAM! It's hit. I performed this same experiment several times with the same results.
Example 2:
I have a CB adult female that fed all her life on white mice. I only feed rats so I give that a try. Nothing, no interest. So I go back to the mice. After a while, all I could get were the fancy mice (multi-colored). She would not touch them. I went back to white mice and like clockwork, she took them. Just to test my theory, I gave her one white mouse which she quickly ate. Followed by a brown mouse that she ignored. After an hour or so I replaced the brown mouse with a white mouse and it was hit almost instantly.
Does color matter? You bet it does. Many animals are "color blind" but this does not mean they cannot tell the difference between shades.
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Jay A. Martin
Jay Martin Reptiles