Why your dog isn't the age you think

Do most animals have an age curve similar to a dog’s, and relatively few have one similar to a humans?

For example, whales, elephants, apes, other intelligent animals with complex social structures stay with their mothers longer and take more time growing up, so they have more time to develop their brains. 

Something like a lizard or snake just pops out of the egg and has to start adulting right away, they don’t have a developmental stage involving play at all. Their curve is probably even more drastic than the dog’s. 

I’d love to see a graph like this with a bunch of animals on it.