Every fan art I've seen, it's huge....yep, Kaiju size. I'd GUESS maybe 1/3 size larger than a Krait dragon?
https://gamerant.com/star-wars-mandalorian-mythosaur-facts-trivia-lore/#they-were-tamed-by-mandalore-the-great
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Think they've done a great job rendering the critters all through Mando. It would explain why the show takes so long. A Mythosaur - the first ever on screen - will get a lot of attention.
But not gonna get excited, F&F could easily have a wimpy finale, after all, Favreau had that slap fight at the end of IM2, even tho he should have known better.
But, for me, if Cara and the New Republic were to buzz in, *having been long suspicious at activity in that sector*.....no, it'll never get that good.