This is a happy version of the classic Flexi Rex you all know. While they are cute beeing angry i thought it was time for them to be happy :)

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Attribution:

This is a remix of DrLex's Flexi Rex with stronger links, which was a remix of Kirbs' Flexi Rex (Thingiverse thing:1759297), based on airfish's remix (Thingiverse thing:2189652). That model in turn was most likely inspired by the ‘Flexy Rex’ by zheng3 (Thingiverse thing:929413).

Print instructions

The recommended print settings are:

• 0.2 mm layer height
• 3 perimeters (important, to make the links strong)
• 15% infill (100% scale), 12% infill (150% scale), 10% infill (200% scale)
• Solid infill threshold 8mm²

Don't use a high infill value, this could cause it to become unbalanced. For improved stability, you could increase infill on the piece with the feet below it, and reduce infill of the head, but this should no longer be necessary if you print the current model with the above recommendations.

I have provided a .3mf for 100%, 150% and 200% scale with the settings already applied.