I have two that are very different as well. Both are about 12 months. One is walking, feeding himself, drinking from a sippy cup, climbing, etc. The other is crawling, rarely uses a spoon, won't even hold his own bottle just cries til you hold it for him (trying to get out of this, but he literally will scream when you try to put his hands on his bottle to show him how to hold it himself). Kids can be so varied!