Fellow feelings Gally there is always a period of 'what the heck now' isn't there? Our youngest DGC will jump around in his door bouncer for ages but then a switch flicks and he hates it. He is 9 months old now and pulling himself up on all the most dangerous pieces of furniture - you know, the ones with corners!! He actually cut his mouth last time he was here but, luckily, the bleeding had stopped by the time DD3 came back. I find this stage the most exhausting.
With you, gm, it is always a relief that they keep breathing isn't it. We lost the cat once and, while I don't believe that cats would suffocate a baby, there was lots of discussion between DH and I about which risk was higher - waking him up or the cat sitting on him!