Animals that have potential after human extinction to start a technical civilization

The most obvious candidates are our closest relatives. Their penchant for cruelty and sexual appetite would lead to an age of violence.

Very intelligent and strong, but not very articulate.

Friendly giants with a talent for comedy. Do they have opposite thumbs?

The only mammals besides us that already create impressive structures.

For a feline civilization it would be necessary to use the front paws more and sleep less.

The World Champions of Survival

See above, only smaller.

Highly intelligent but they tend to be solitary

See above, only smaller.

The civil engineers of the forest