Technical question on which I would appreciate your insight.

I am writing about the coeurl, Nepetu, and am changing the pronoun form in the paragraph from the 'his' to 'its' in order to reflect a change in condition. Does that sound legitimate to you? In order to clarify, I am using 'his' in the first part of the paragraph and 'its' later in the same paragraph. G-d, I am so inarticulate today!