Pets sensing labor?

Katie • Mom of a lively amazing little boy (9.30.15) and sweet silly toddler girl (8.16.17) busy and loving it!
My cat has always been close to me, but today she is all up on me. If I get up she follows me and waits for me to sit back down then she crawls right back up in my lap... Hoping she has some kind of kitty sense that little man is on his way.
Anyone else have their animals acting clinger than normal? Or had pets do this around when labor started in past pregnancies?