Correct sentence: Unlike their mums, baby tapirs have stripes that help them hide better.
Why this is correct (simple steps):
- The comma after "Unlike their mums" is correct. It shows that the first part is talking about mothers.
- We use "that" instead of "which" because the idea about the stripes is important to the sentence. "That" is used when the information is necessary.
- "Mums" is fine to use. You could also say "mothers" if you like.
Short, easier version: Baby tapirs have stripes that help them hide. Their mums do not have stripes.
Try saying the corrected sentence out loud to practice!