The sentence you provided is grammatically correct: 'The cub watches and learns from its mum wherever she goes.'
Explanation:
- Subject: 'The cub' - singular noun.
- Verbs: 'watches' and 'learns' are both in third person singular form, which matches the subject.
- Possessive adjective: 'its' correctly refers to the cub.
- Relative clause: 'wherever she goes' correctly describes the mum's movement.
So, no changes are needed. It's a clear and correct sentence for a 5-year-old to understand.