Here's a Lowpoly Puppy that's easy to print with minimal support, multicoloured, and Ready for 3D Printing. I've included a pre-configured 3MF file. You can resize as you need in Slicers.

Recommended Printing Details

• 0.1 - 0.2 Layer Height (Depending on the quality you want).
• 3 walls.
• 15% Grid (or Cross Hatch) Infill.
• Brim with Outer layer.
• Support Needed.
• Adaptive Layer Height recommended (But will slow print down).
• Tested down to 80% of its original size on a well-calibrated printer.
• Make sure you have good adhesion. Slow down the initial layer & infill speed.
• Pre-Cinfigured 3MF file is included. Just Download>Slice>Print