Onomatopoeia for dogs wagging tail hitting the floor?

Here are some onomatopoeias for a dog's wagging tail hitting the floor:

Soft and gentle:

* Thump-thump

* Tap-tap

* Pat-pat

* Slap-slap

Medium intensity:

* Whap-whap

* Bop-bop

* Thud-thud

Energetic and excited:

* Whizz-whizz

* Swoosh-swoosh

* Bam-bam

* Boom-boom

You could also combine these sounds, like "thump-thump-swoosh" or "whap-whap-bam." Ultimately, the best sound will depend on the size and energy of the dog and the intensity of the wag!