I suppose I should start at the beginning. I've been keeping snakes for about 16 years, but I've only been keeping boas for about the past 4 and a half years. I have several books on the proper care and maintenance of boas, and I've read them all. However, nothing compares to hands-on experience, lol. Last year I bred my 3 year, 5 and 1/2 foot anerythristic columbian male (Ambrosius) to my 5 year 7 foot female columbian red-tail (Kalypso). It was my first breeding attempt EVER! I wasn't trying to achieve any rare or special morphs or anything (obviously), I just think it would be nifty to breed my snakes. Like a new area to expand my herpetocultural hobby into. I have a friend who owns a pet store that will be buying the babies from me, so I don't need to worry about finding homes for all of them. But I digress. The breeding went well. I stopped feeding and decreased their photoperiod starting in November. I lowered the temperature gradually, but only a little so that one end of the terrarium was 72 degrees and the other end was 80 for each snake. Early in December I put Ambrosius into Kalypso's terrarium. I witnesed copulation several times, so there certainly was breeding. In late April I separated them again and fed Ambrosius. I also offered food to Kalypso, but not as big as I would normally feed her. She ate ravenously. I continued to offer her food throughout her pregnancy period, and she never once refused food. I had never bred before, so I figured it was like a pregnant human woman; the more food the happier the creature. Later I discovered that this is a mistake, food intake should be restricted and carefully regulated for a gravid boa. I kept her very warm, with one end of her terrarium at about 103 and the other end around 95 degrees. Early in June as my wife and I were preparing for a camping trip, I woke up one morning to discover a peculiar odor in the living room. Kalypso had given birth! There were problems though. There were 8 babies and 13 slugs. 6 of the babies were dead. They had very large yolk sacks still attatched to their abdomens, and the yolk sacks had ruptured. The other 2 snakes were still inside the membrane, and were occasionally moving about. I was concerned since they were no longer inside the mother, and I carefully made a tiny incision into both membranes. I let the baby snakes make their own way out. I kept them damp by spraying just a bit of mist into the terrarium, as I had read it was a good idea. About 3 hours later they had also died. So my first breeding was a failure. Some breeders have told me that storm fronts can cause premature births, and there had been a storm for the previous 2 days. A couple of people have also told me I should have left them together for longer. I'm curious to see what tidbits of information you guys might have. This year I bred Ambrosius to Kalypso again. I left them together for 5 months and I witnessed copulation many, many times. I have high hopes that this time there will be fewer slugs and more offspring, but I would greatly appreciate any information you guys might have on the proper care of gravid female boas. Thanks!