Best cave mount imo, it can climb anything and skip the dangers it feels like ur cheating through caves. Just bring a sword or rifle if u get into trouble since rider weapon is enabled and level hp and stam
To easily tame it, bring a few bolas, lots toxic arrows with your crossbow or bow, lots of meat, also tons of biotoxin (which you can easily get by killing the shiny jellyfish thingy around the shores). Once you fínd a Megalania, use your bola and shoot ton of toxìc arrows at it, in between use your bola again so it doesn’t escape. When it’s knocked out (I’m sure you know the rest) feed it meat and biotoxin to control its torpor. WOLA! You’ve just tamed a MEGALANIA!!
The best tame for caving as you can skip otherwise hard areas and dangerous enemies by just crawling on the wall or ceiling plus it can fit in tight spaces and you can use weapons while on back, making it a must for caves