Entity cramming kills cats/dogs when teleporting

I have just joined Minecraft 1.14. I was super excited to see all the cat varients. I wanted to get the achievement you get when you tame all types. I finally got it, but realized there were a TON of cats. I flew a way and landed to test out scaffolding. right as I landed, it said: Cat was squished too much 3 times. I nearly cried. I love them. the sounds they make... anyway. I was really sad and I hope you can fix it soon. thanks!