“It’s more of those horned devil dogs!” Locklar called. “What should we do?”
Jorda strained to see, finally making them out in the shadows.
“Run!” he shouted, turning toward the trees a half-mile in the distance.
No. Enc.: 1d6 (2d6)
Movement: 150′ (50′)
Armor Class: 5 
Hit Dice: 1+1
Attacks: 1 bite or charge
Damage: 1d4 or 1d6+1
Hoard Class: Nil
These are larger cousins of regular jackals with pronghorns. They are far more aggressive than standard jackals but can quickly scatter if an encounter begins to go badly for them.
They can initially charge and ram with their horns. When biting, a natural ‘to-hit’ roll of 20 indicates that the horns have also gouged the target, causing an extra 1d4 in damage.
Just a low HD encounter with a little something to spice it up a bit.