Western Australian Consolidated Regulations[Regulations 6(3a) and 10B]
Part 1 — Proof of sterilization
Ear Tattoo
Specifications: Ear tattoo to consist of a broken
circle having a diameter of not less than 8 mm, with a bisecting broken line
not less than 15 mm in length.
Specimen:

Part 2 — Dangerous dogs to be identified
Specifications: The collar to be worn by a
dangerous dog shall —
(a) bear
alternating red stripes and yellow stripes, each stripe being 25 mm wide and
set at an angle of 45 degrees to the rim of the collar; and
(b)
reflect light from at least one of those colours so that the collar can be
rendered visible in darkness; and
(c) be
made of durable materials; and
(d) be
capable of being securely fastened; and
(e) be
capable of being attached to a leash; and
(f) have
a minimum width —
(i)
in the case of a dog weighing less than 10 kg, 15
mm; or
(ii)
in the case of a dog weighing 10 kg or more but less than
20 kg, 25 mm; or
(iii)
in the case of a dog weighing 20 kg or more but less than
40 kg, 40 mm; or
(iv)
in the case of a dog weighing 40 kg or more, 50 mm.
Part 3 — Signs to be displayed where a dangerous dog is kept
Specifications: The sign to be displayed at each
entrance to premises where a dangerous dog is kept shall —
(a) be a
white rectangle measuring 200 mm by 300 mm; and
(b) made
of a durable material; and
(c)
contain the word “WARNING” in white capital letters 30 mm high on
a red rectangular panel measuring 190 mm by 45 mm near the top of the
rectangle referred to in paragraph (a); and
(d)
contain below the panel referred to in paragraph (c) a red circle 160 mm
in diameter containing the black head and neck of a dog 100 mm high wearing
the collar provided for in Part 2 of this Schedule; and
(e)
contain below the circle referred to in paragraph (d) the words
“DANGEROUS DOG” in capital letters 20 mm high.
A black and white version of that sign is shown below.
Dangerous dog sign

[Third Schedule inserted in Gazette 18 Sep 1987 p. 3650;
amended in Gazette 13 Sep 1996 p. 4680‑1.]