My 'sona is half-disqualified from the question on account of being a fictional dragon. On the other hand, even if you were to compare them to monitor lizards, the fins and ears kind of screw that up too (not to mention the horns).
Honestly, I prefer specific settings to have realism though not everything requires it for me to like it. I did a post-apocalyptic RP once and originally intended "more human than animal", but the other players kept some of their species traits in - the rabbit was a vegetarian (though I never noted any consumption of eggs or dairy, I'll assume there's a reason why they weren't fully vegan because that player actually owned rabbits), the alpaca had a spitting tendency on at least one occasion, and the otter was a glutton partially because otters simply have higher metabolism (though they're not weasel-level).