Triquetra

A Triquerta (or trinity) celtic knot with three animal symbols. A quick tattoo-like design thing that took maybe two hours. In the center is a Triskele knot, representing the sun, afterlife and reincarnation.

Raven (Fitheach): Take care when dealing with this bird. An important totem animal of the Celts. In Ireland the raven was associated with the battlefields and such goddesses as the Morrigu or later Welsh Morrigan, just as was the crow. The bird was connected with Bran the Blessed; in Welsh bran means "raven". Although its reputation is dubious, it is an oracular bird. It often represents the upsets and crises of life that are necessary for anything new to be created.

Cat (Caoit, Cat): Many of the Celtic legends pictured the cat as a ferocious, evil creature, but that may have been because cats at that time were untamed. However, it was considered a potent totem animal of several clans; Caithness was named after the clan of the Catti. In Ireland Finn mac Cumhail was said to have fought a clan of "cat-headed" people, probably Celts who wore cat skins on their helmets. The cat is a strong protector, especially when facing a confrontational situation.

Dog (Abach, Madadh) or Hound : Devoted hounds are often mentioned in Celtic myths, such as Bran and Sceolan which belonged to Finn mac Cumhail. Underworld hounds, such as the Welsh Cwn Annwn belonging to Arawn, are always white with red ears. The Underworld Hounds run down and punish the guilty. Dogs represent tracking skills, the ability to scent a trail, and companionship.
From; [link]