Peter is trying to compare the actions of these two animals with how easy it is to backslide as a new Christian. Old habits are very hard to break…especially when we keep the same old friends and hang out at the same places that got us into trouble in the first place. When we’re stressed or pressured, we tend to automatically seek out what is comfortable and familiar…whether it’s the best thing for us or not. And falling back on old ways is always a dangerous and tricky thing…for we can so easily get sucked back in and entangled. For it tells us in Galatians 4:9, ” But now that you know God – or rather are known by God – how is it that you are turning back to those weak and miserable principles? Do you wish to be enslaved by them all over again?” As a new Christian, it must be then a conscious decision and determination to walk away and break off old ties…no matter how hard it may seem.