A Doggy Dialect

Isn't it funny how many idioms and expressions we have that pertain to dogs? Here's a list of some of them we've thought up; can you think of any more?

A barking dog never bites
A dog and pony show
A hang-dog look
Barking up the wrong tree
Dog days of summer
Dog tired
Doggone it!
Every dog has its day
Gone to the dogs
His bark is worse than his bite
Hot diggity dog!
I double dog dare ya
If you can't run with the big dogs, stay on the porch
In the dog house
It's a dog-eat-dog world
Lead a dog's life
Let sleeping dogs lie
Mean as a junk-yard dog
Putting on the dog
Raining cats and dogs
Sick as a dog
The hair of the dog that bit you
The underdog
Top dog
Treat you like a dog
Work like a dog
You can't teach an old dog new tricks
You lucky dog!