Advertisement A few years back I bought a 20 inch or so boa that was labeled as a red tailed boa. I was later told that red tailed boas are rarely offered and I believe it is actually a suriname boa. Whatever the case, I've read that by the second year, they should reach 6-10 feet. I've had my girl for well over 3-4 years and she may be about 4 feet. I know that different online care sheets state different information. My question is, is this rate of growth normal? As stated I've had her going on 4 years and she is only about 4 feet maybe a few inches longer. I fear that somehow her growth has stunted. Just looking for some feedback. Thank you.