"Perfectly sure. You just watch me, and you will see that I do not eat you. Watch me carefully."
"Oh, I meant are you sure that you are a trick dog," went on Sammie.
"Of course, I am sure. I can do lots of tricks. I can play dead. I can turn a back somersault, and I can walk on my hind legs—"
"Oh, I can do that, too," interrupted Sammie.
"Yes, I know. I saw you do that a little while ago. But can you walk on your front legs, with your hind ones up in the air? Now, can you do that?" and the black doggie looked straight at Sammie.
"I never tried that," replied Sammie.
"No; and I guess you'd better not, unless you want to fall. I fell lots of times before I learned it. But I can do it now, and every time I do my master gives me a sweet cracker."
"What's a sweet cracker?" asked Sammie, who thought it sounded very nice.
"Don't you know what a sweet cracker is?" asked the doggie, who was much surprised.
"No, I don't," declared Sammie.