Complement to Robin Day's Bird and Dog English Expressions of May 18 (see link below), as posted in the Discussion Forum of this site on May 19 and 20 by Wilma and Jennygaorui:

BIRDS:

From Wilma <ttwmacmillan@hotmail.com>:
A bird in the hand is worth two in the bush
Isn't that just ducky?
Nice weather for ducks!
Duck!!
Ducks-rubber footwear for rainy days
Sing like a bird
Swan song - farewell appearance
Sing like a bird
Pecking order
Crestfallen??
Ugly duckling
As the crow flies
Eyes like a hawk
Loony-crazy
Loony-Canadian dollar coin
Hen parties - all-girl parties
To be a night hawk - to stay up half the night
Robin's egg blue
Nest egg
To quit cold turkey
She took him under her wing
Birds of a feather flock together
Don't ruffle her feathers
Sing like a canary - to reveal someone else's guilt
Canary yellow

From Jennygaorui:
A bird's eye view
The bird has flown
A bird's passage
Free as a bird
A home bird
A little bird told me
A Rare bird
The birds and the bees
(Strictly) for the birds
A lame duck
Sitting duck
Like a duck to the water

DOGS:

From Wilma <ttwmacmillan@hotmail.com>:
His bark is worse than his bite
You're barking up the wrong tree
Don't hound me
Dog tag - army ID
Dog days of summer - refers to Sirius, the Dog Star
Work like a dog
Dog-eared
Dogged-persistent
Pup tent
We were treated like dogs - mistreated
Dogtooth violet - North American wild flower
Hounds-tooth - a textile weave
His hackles are up!
Dog leg (golf course)
It's a dog eat dog world!
And then there's-----birddog! What else? C'mon, folks!

From Jennygaorui:
Eat dog
Dog somebody's footsteps
A dog in the manager
A dog's breakfast/dinner
Every dog has its day
Give a dog a bad name
Fight like cat and dog
The hair of a dog
Not a dog chance
The tail is wagging the dog
Teach an old dog new tricks
Top dog
There's life in the old dog yet
In the dog house
Let sleeping dog lie
Go to the dog
Raining cats and dogs
Junkyard dog