Dog Language by Marion Hovey Briggs poem

Our Towser is the finest dog that ever wore a collar,
We wouldn't sell him—no, indeed—not even for a dollar!
I understand his language now, 'cause honest, it appears
That dogs can talk, and say a lot, with just their tails and ears.
When I come home from school he meets me with a joyous bound,
And shakes that long tail sideways, down and up, and round and round.
Pa says he's going to hang a rug beside the door to see

If Towser will not beat it while he's busy greeting me.
Then when he sees me get my hat, but thinks he cannot go,
His ears get limp, his tail drops down, and he just walks off—slow;
Though if I say the magic words:

"Well, Towser, want to come?"
Why, say! You'd know he answered "Yes," although at speech he's dumb.