[header] How to tell if a cat is in labor [title] Observe the cat looking for a nest. [step] In the days leading up to queening, a pregnant cat will start looking for a nest, or suitable place to give birth to and care for her kittens. Many cats that are about to give birth will seek privacy, like a closet or other hiding spot. 
If you notice yours investigating areas like this, you can lay a blanket or towels down to make it more comfortable. [substeps] You can also offer your cat a nest, such as a cardboard box.