Necesito una descripcion de mi perro, que hace y como es usando can - can't must - mustn't?

Rose, my dog, I love her so much.

I can say that she is the real love of my life.

She is very faithful and friendly.

I never feel bored when she is around, because she is playful and lovely.

We can spend hours without feeling the time passing.

She is always waiting for me when I am not at home.

I buy her special food by she likes fish the most.

I can't stay for more than an hour with her, and when I am at school I wait eagerly to go back to her again.

I must say that pets are essential thing in our lives and we must protect them from any possible harm.