Totem-Sized Pokémon are counted as being in the Undiscovered Egg Group so they cannot be bred. Having more of them is a possibility if you can find a lot of Totem Stickers
This is also false. It was tested and they can be bred, but the offspring will not be Totem-sized.
966 -
Lurantis 1 - 966 (Stage: 2)
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Base Stats: 070.105.090.080.090.045 (BST: 480)
EV Yield: 0.2.0.0.0.0
Abilities: Leaf Guard (1) | Leaf Guard (2) | Contrary (H)
Type: Grass
Item 1 (50%):
Item 2 (5%): Miracle Seed
Item 3 (1%):
EXP Group: Medium-Fast
Egg Group: Grass
Hatch Cycles: 020
Height: 01.5 m, Weight: 058.0 kg, Color: Pink
Move Tutors: Bug Bite, Dual Chop, Signal Beam, Seed Bomb, Superpower, Snore, Knock Off, Synthesis, Giga Drain, Worry Seed, Defog, Laser Focus