Good question. Maybe it's just to balance out what would otherwise be a scraggly tail?
Why don't you make up an explanation no matter how silly it sounds? It's a lot of fun!
I don't know why the wolf is holding a four leaf clover. Maybe luck is on the wolf's side. Hmmm...too bad, unless the wolf represents Moz in some way.
As for the symbols in the background, here's my addled take:
gavel -- still obsessing about court cases, I guess
bomb -- louder than? Incidentally, on the bmi registry, a
song title (not just the LP title)
Louder Than Bombs is registered to Morrissey and Marr. It makes sense. I've heard of bands coming up with title tracks that actually don't make it to the album and are never released.
brass knuckles -- Moz was sporting a pair on the cover of Q I think in '94 thereabouts. Trying to be all hard like a Kray gangster or somethin'
tombstone/crest -- in one position it looks like a tombstone, upside-down looks like a shield. No surprise that Moz would be dwelling on tombstones and that it would be fitting to double as a sort of crest/shield.
tear-shaped blob -- again, in one orientation, looks like a teardrop. The upside-down way just looks like a top-heavy blob. Tears...seems like his lyrics are dripping with 'em.
pen nib -- C'mon! We're talking England's finest living wordsmith here!
heart -- see pen nib
clover -- Irish blood?
something that resembles an atomic diagram? -- the world?
stylized starbust pattern -- I dunno. Maybe a flower? He used to quite like flowers, especially in the 80s.
I'm too exhausted to muse on what the pokey stick-like things with tommy guns on the ends could be. I just think of "my love is as sharp as a needle in your eye".