I believe western hognoses can live in a 10gal for life, as they rarely get larger than 3-4ft... plus they like to burrow, so a deep substrate keeps them from needing much "wandering space." My hognose is almost a year old right now, and I'd say she's 140g and maybe 2 feet long - she lives in a 15qt tub quite happily, but I'll probably move her into a 28qt when she's full grown.
How can you resist a face like this?
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