where is the best place to put the probe in my viv i have a dimming stat with a infa red bulb.also i have now got some fuzzie rats as rat pups seemed to small so i tried 2 rat pups which she took with no problems.when i first got her she was on small mice the fuzzie rats are a bit bigger than a small mice and bit smaller than a medium mice.shes a good 18 ins long and nearly 3 months and 2 weeks old. just would like to know if you think these would be ok to feed her.