In my world, I don't think anyone distinguishes between "smart animals" and other animals the way the OP seems to, so I'm not sure how smart the cutoff is. My world has lots of kinds of animal, and a lot of them are smart enough to use the Internet. The country I live in, Equestria, is mostly run by ponies. Ponies are hoofed, hairy, herbivorous quadrupeds who bear live young and have noses and eyes and ears. Ponies come in three types with different magics; Unicorns have horns and can do telekinesis and cast spells, Pegusi have wings and can control the weather, and Earth Ponies whose magic is really idiosyncratic and variable and confusing. Each individual pony has a "special talent", which is something they're naturally extremely talented at and able to use their magic for in ways other ponies can't.
Probably the three next most common sorts of animal in Equestria who are smart enough to use the internet are donkeys, gryphons and cattle. Donkeys are a lot like ponies but never have wings, horns, magic or special talents. They're also less outgoing, more stubborn, less prone to panic and cope better with distress. Donkeys and ponies can have foals together but the foals will be infertile. Gryphons are winged, hairy, egg-laying carnivores and about as outgoing as outgoing as donkeys. Cattle are kind of like giant, stupid unicorns. A long time ago, Equestrian cattle were bred to produce much more milk than they need for their own children, so now they sell the excess.
Some of the lands near Equestria are controlled by buffalo, dragons and Changelings. Buffalo are a lot like cattle, although they were never bred. Dragons are scaly, winged, egg-laying bipeds who breathe magical fire, eat gems and can grow really big. They become really aggressive, avaricious and selfish as they mature, but they only mature as fast as they can acquire possessions, so in Equestria they aren't allowed to own anything. Changelings have chitinous exoskeletons and wings, lay eggs, and live by draining magic, energy and health from other animals. A changeling can only drain magic and energy from someone who loves that changeling, so they often impersonate peoples' loved ones while interacting with them. Changelings can use their magic for illusions and telepathy as well as for whatever sort of things the person they drained magic from could use it for.