Its never a good idea to house snakes together unless they are breeding. They dont need or want buddies.
Actually Jon with all due respect, this is a very common misconception within the reptile community. While most snakes do not typically associate together under normal circumstances there are several species that do however congregate such as rattlesnakes as well as multiple species that oftentimes inhabit the same den during brumation months.
Having said all of that, I had the distinct pleasure of spending a weekend at Bob Applegate's ranch a couple of years ago. I was rather shocked to see that the majority of his kingsnake and milksnake collection were all cohabitating together and if you remember, kingsnakes are primarily an ophiophagus (snake eating) species. He was cohabitating his snakes on a 1.2 basis and told us that he's only had a few incidents and these were with rogue animals that did not associate well with other snakes under any circumstance.
So, this too can be said of breeding some females that are more prone to eating than anything else where you run the risk of cannabalism whenever you introduce any male. I have a specific female that is like this and I would never leave a male with her unattended. But on the other hand, I have several females that I've kept males with for months without any problems at all. It has even been suggested in some breeders opinions that keeping a pair together over a long term, even during brumation, for specific breeding projects can have better results than us, as keepers, trying to determine when to pair up specific individuals as the animals themselves know and understand when it's their time to breed.
And I would strongly discourage this with hognose. They can have a huge feeding response, which can end with one getting chewed on, or worse!! I had this happen to me once when I kept a freshly hatched clutch together for too long. I have even heard of neonates going a step further and eating their siblings.
I can understand the scenario with neonates. They will typically be hungry after their first shed (usually within a week) and if all they have around is other offspring, to them, this might be their only other food source to consider since they've not been introduced to anything else. I typically separate my neonates within 24 hours of hatching for just these reasons alone.
Again, I think this is highly determinate on individual animals, but yeah, I agree that females can have a huge feeding response, especially when they are going through their 1st and 2nd years or when needing to bulk up for breeding. Overall, it is a safe practice to not keep snakes together just in case. I just don't think that it's the golden rule but more often an ideology or myth that most people abide by without having done any long term studies of it.
Remember, Bob Applegate has been cohabitating and breeding kingsnakes this way for decades and his long term experience has been very different than what is typically advised by other kingsnake breeders. But hognose are a completely different species, so they should be regarded as such with possibly different results.
It's also worthy to note that a lot of Europeans also cohabitate snakes successfully and many an argument has been had on forums over the American mentality of cohabitating versus the European mentality of cohabitating.
For the record, I will state that there will always be an inherent risk whenever you put any two snakes together, whether for cohabitating purposes or for breeding, and that risk is typically multiplied when they are housed over longer periods.
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Troy Rexroth
Rextiles
