const visibleCheckboxes = document.querySelectorAll('.checky')

visibleCheckboxes.forEach(checkbox => checkbox.addEventListener('change', () => {
let hiddenCheckbox = checkbox.nextElementSibling;
checkbox.checked ? hiddenCheckbox.value = 'Yes' : hiddenCheckbox.value = 'No';
}))

//html
<label>
  <input type="checkbox" class="checky" />
  <input type="text" value="no" /> Cats
</label>
<label>
  <input type="checkbox" class="checky" />
  <input type="text" value="no" /> Dogs
</label>
<label>
  <input type="checkbox" class="checky" />
  <input type="text" value="no" /> Fish
</label>