I'll second Lisa on this one.

My cat is an indoor cat and she was the queen of the house. She'd bite and scratch us if there was something she didn't like. TBH she was a TOTAL b***h!!! We would put up with it though because she was our baby and I carried her everywhere - TOTALLY SPOILED!!!

Then DS came along. She was very wary of the nb and sniffed him from a distance a couple of times. I think she then worked out he was boring as all heck. NOW - I should put the picture up in my gallery..... he pulls her tail, he pokes her in the nose, he strangles her, he chases her - anything in a cat nightmare happens to her. But she always comes back for more and NEVER bites him. DH and I try anything even slightly resembling what he does to her we get the teeth and claws.

Cats and kids have very odd relationships - I call these two 'Two peas in a pod'. They are always together, it's like they have this psychic thing going on adults just don't understand.

If you're worried about the cot thing phynna's suggestion is great. Apart from that, I think you'll be surprised about the value having a cat with the baby is.