Corrected sentence: In autumn, many animals, such as squirrels, make winter stashes.
Why this is better (in kid-friendly steps):
- We use lowercase for common words: 'autumn' and 'winter stashes' are not names, so we do not write them in CAPITALS.
- We changed 'like' to 'such as' so it clearly shows squirrels are an example of these animals.
- We do not need the word 'their'—'make winter stashes' already tells us what the animals do. You can keep 'their' if you want: 'make their winter stashes' is also correct.
- The comma after 'autumn' is okay because it gives a little pause; the commas around 'such as squirrels' show that squirrels are an example.
Other simple ways to say it:
- In autumn many animals hide food for the winter.
- In autumn, squirrels make a winter stash.
Nice work noticing the sentence — good job asking about grammar!