All good.
Updated.
Here's the next one...
Centered in the dining room are three 20-foot-diameter spheres made of transparent crystal (AC 3; 25 points of damage shatters a sphere). Each sphere contains a different species of rare creature, along with whatever foliage, minerals, and scenery are necessary to simulate its native habitat. Small holes in the top of the spheres provide ventilation. The proprietors change the exhibits every few months, since new creatures guarantee a surge in business. The current exhibits include a Maladomini tiger (from Baator, it resembles a cheetah made of black granite; its sphere is filled with jagged rocks and a pool of mud), a batfly (from Chamada in the plane of Gehenna, it resembles a butterfly with bat wings, made of solid iron; molten lava lines the bottom of its sphere), and an eyewing (from the Abyss; it hovers silently in the otherwise empty sphere).
Maldomini Tiger: AC 2; MV 9; HD 4; THACO 17; #AT 3; Dmg ld4/ld4/1d10; SA claw rake; SD surprised only on a 1: sz M (4’ long); ML 10 (average); Int inimal (I); AL N; XP 420.
Notes: SA claw rake-if attack hits with both forepaws, rakes with rear claws for ld6+1 points of damage each.
We'll probably need to jazz this up a bit. Here is info on Maladomini...
"The seventh layer of the Nine Hells is dotted with ruined, abandoned cities. Under the blood-black sky, petitioners quarry, carve, and build new cities for the Lord of the Seventh. Mine pits, slag heaps, and brackish canals cover the land like sores. Newer cities are built upon the backs of older ruins. As each city is finished, the Lord's dissatisfaction forces his subjects to begin anew.
The abandoned cities are not empty. They serve as home for petitioners who've fled their devilish tormentors, beasts from other planes who've become especially lost, and lost planar travelers who don't want to be found."
Baalzebul is the Lord of the Seventh.
Based on all that, I'd recommend taking a cheetah as a base creature, giving it some fiendish/half-fiend traits, as well as immunity to disease (and possibly poison) and perhaps the ability to spread it.