Posts depicting needle-like protrusions in parts of a body.
Spines are found in both vertebrate and invertebrate animals alike, in mammals they are more commonly seen in hedgehogs and porcupines. Also found on some plants, such as cactuses.

Note that although animals such as hedgehogs are expected to have these, most of the anthro hedgehogs (such as the ones in Sonic the Hedgehog (series)) actually lack anything that could be tagged as spines.

Not to be confused with:

• barbs
• spikes_(anatomy), which should be used instead if the protrusions are not shaped like a needle
• spiked_penis
• dorsal_ridge
• tail_ridge, blunt protrusions commonly found in crocodilians, lizards, and dragons

Related tags:

• frill_spines, spines combined with membranous frill
• head_spines
• back_spines
• tail_spines

See also:

• head_crest