How to pronounce 樓頂 in Cantonese (5 out of 6):

兩隻狗狗在樓頂 Two dogs on the roof.
Two dogs on the roof.

Cantonese Sentence Breakdown

loeng5
two
both
some
a few
tael, unit of weight equal to 50 grams (modern) or 1
16 of a catty 斤jīn [斤] (old)
a group of about ten people
zek3
classifier for birds and certain animals, one of a pair, some utensils, vessels etc
single
alone
one only
one of pair
month (in prison sentence)
gau2
dog M: 只zhī [只]
条tiáo [条]
a pistol
a prison officer
damned
cursed
football
zoi6
(located) at
(to be) in
to exist
in the middle of doing sth
(indicating an action in progress)
to depend on
to rest with
to be alive
樓頂 lau4 deng2
rooftop