Green’s Dictionary of Slang

cattledog v.

(Aus.)

to speak nonsense, to attempt to confuse.

[Aus]J. Byrell Up the Cross 36: ‘There’s no need to cattledog our ears, Mick. And you can cut out the fart-arse one-liners too’.

In derivatives

cattledogger (n.)

one who talks deliberate nonsense to confuse their hearers.

[Aus]J. Byrell Lairs, Urgers & Coat-Tuggers 164: George ‘Bluey’ Grussell (who could at times be a bit of a bullshitter and who was a notorious cattledogger [hence the ‘Bluey’] and arguer for the sake of argument) said that our Oz bookies were the bravest anywhere on earth.
cattledogging (n.)

the act of deliberately confusing a hearer/hearers.

[Aus]J. Byrell Lairs, Urgers & Coat-Tuggers 149: Brucie the Rooster stops his cattle-dogging (which comprises a convoluted eulogy on the obvious well-established merits of Jack ‘The Professor’ Thompson who is his all-time best-loved hoop) and prepares to verbally assault his rude and unappreciative little mate.