Wolves had a slightly hardier endurance (4 points) and similar attack power (3 points) to their 'Dog' counterparts. A more dangerous but visually identical wolf variant was encountered around Uschtenheim, these were the most resistant of the class, with 8 health points and 6 attack points.[Blood Omen][1]
Dogs were among the lowest level of enemies Kain encountered in his quest meager endurance (2 points) and attack power (3 points) and usually attacking by rushing and biting. They were also fairly rare found only in two outside locations around the pillars - two were present in the Nachholm trail and one nearby the Wolf form dungeon - both encounters had the dogs present alongside the more dangerous Wolves.[Blood Omen][Blood Omen/3][1]
Notes
Neither Dogs or Wolves are named in any official sources, however fan-made guides - including those of Blood Omen recreation Blood Omnicide - typically refer to these enemies as such based on visual observation.[1][2][3] In game files the sprites relating to Wolves and Dogs are referred to as "char0013" and "char0014" respectively.[Blood Omen]
The 'dog' variant class appear visually similar to the 'wolf' enemy class, appearing to be almost identical apart from the brown coat as opposed to the grey coat of wolves. The two were also similar in other ways, both sharing the same attacks and animations, and with wolves often found alongside dogs in the wild.[Blood Omen]
At least one piece of Blood Omen concept art depicts an earlier version of the wolf enemies - notably with more protruding fangs than the finished version.