Time Dogs are a highly evolved form of Blink Dog that make their home on the Demiplane of Time. It is impossible to tell whether the temporal abilities of these dogs are a difference engineered or bred by some ancient Chronomancer, or if the progression from Blink Dog to Time Dog was a case of natural evolution, but these canines do have a pleasant attitude toward wizards, for some unknown reason.

Time Dogs distinctly resemble their distant ancestors. They have short, yellow-brown hair, and they are stocky and muscular. They are slightly smaller than Blink Dogs, and they have apparently lost the power of teleportation, but they have developed other, more powerful abilities make up for that loss. They number among the temporal creature of the Demiplane of Time that possess the ability to slip into reality.

They tend to prefer solitude over the pack, in large part due to the fact that there is sparse hunting on the Demiplane of Time. Whenever they are encountered by a party, however, there is a 15% chance that they currently happen to be running with a small pack (2d6), in order to take down a larger creature that none of them could handle on their own.

Many characters have taken to feeding these creatures (and sometimes even offering them some sort of treasure) in order to gain their company for short periods. A friendly dog has been known to remain with a person or party for up to 14 days in the while on the Demiplane of Time. Fast as these creatures are, the group never has to worry about the Time Dog slowing them down – quite the opposite, but the dogs do not seem to mind. A major benefit of having a Time Dog along on a trip is that the canine barks at any sort of unfriendly creature, warning companions of danger.

If a character manages to enlist the aid of a Time Dog for a period of greater than two weeks, it considers that character an Ally from that point on. Bribery or threats never hold a Time Dog's assistance this long. The character must prove worthy of an unbefriended dog's loyalty within four days, or the dog will Time Slip away from the character.

Time Dogs normally thrive on moss and algae-like lifeforms native to the Demiplane of Time, but packs will sometimes go after large prey. Hunger can drive them to reality in the Prime Material in search of food, but only for short periods of time, The frequency they are encountered in reality is very rare.

Time Dogs make lairs within naturally occurring caves formed by event tangles in the lifelines on the Demiplane of Time, and it is here that they store their treasure and hide their precious pups. These dogs normally detect adventurers long before they reach a lair and draw them off in any way necessary. If a lair is discovered, there is a 10% chance for 2-8 pups and a 20% chance for other treasure to be there.

Pups can be raised to be loyal companions to a character, and their high intelligence makes them very useful or very troublesome, depending on how they are treated. The treasure could be anything of value, including magical weapons and armor, high quality merchandise, miscellaneous magic (including potions and scrolls), and of course gems and coins. Although the dogs have little need for this stuff, they know the value of trade. They acquire the material not by attacking passing travelers but by scouring the areas of the Demilplane of Time where battles between less friendly temporal creatures and Chronomancers and their companions have taken place. Some predators have no desire for these items, so the dogs collect them for their own uses.