Jazzy

My beautiful dog is called Jazzy.
She is a Kelpie + Ridgeback and is very energetic and playful. We got her from the pound when she was 4 and she was very naughty, pulled on the lead, got into fights etc. etc. Now we have tamed here a little but she is still mad.
Of course, she isn't the puppy she once was and, being 9, has a bit of grey around the nose, but she still acts like she is. She just doesn't wanna grow up!

I am writing a poem about Jazz using metaphors but but so far I've only done 1 line. Here it is:

Jazzy is a can of coke, bursting to get out.

I'm not very good at this, does anyone have any ideas? Have you ever made a poem about your dogs? I would love it if you could share it! I have decided, I am calling all poets (or novices or people who just wanna have fun....) to share with me there poems about dogs!
I'm excited now! This will be fun! Please put your poems or suggestions about my poem in a comment. I can't wait!