This is close enough to a panther. If we use Conjuration skill, my home approach to this is +7 shifts for medium animate, then 1 shift for every skill and 2 shifts per refresh point, so
High Concept: Mountain Lion
Other:
Silent Killer
Scaredy Cat
Skills:
Superb: Stealth, 1 x 5 shifts
Great: Athletics, Fists, 2 x 4 shifts
Good: Endurance, Intimidate, 2 x 3 shifts
Fair: Alertness, Survival, 2 x 2 shifts
Average: Discipline, Might, Presence, 3 x 1 shift
Powers:
Claws [-1] 2 x 1 shift
Echoes of the Beast [-1] 2 x 1 shift
Inhuman Strength [-2] 2 x 2 shifts
Inhuman Speed [-2] 2 x 2 shifts
Total Refresh: -6
Stress:
Mental: OO
Physical: OOOO
Social: OOO
Armor: 0.
So 45 shifts to summon the "panther" using conjuration. If we add another 2 shifts, we would get a handful, 4 shifts would give us maybe a dozen, 6 shifts would give us enough to fill central park if I remember correctly. So call it 49 shifts to summon 12 panthers, again using my homegrown method to calculate the cost based on what I remember from conjuration and what I came up with earlier. Hmmm...add in 12 shifts for lasting a mortal lifetime? Something similar could be done for the apes, snakes, and birds. Maybe 244 shifts as an approximation to get 1 dozen panthers, 1 dozen apes, 2-4 dozen snakes, and probably 4 dozen birds.
Maybe the transformation is done first, then the conjuration. So, how would the transformation work? I really want something permanent, not an illusion at this point. However, now that you have my curiousity aroused, what would it be for an illusion?