PhD - what animal is that?

PhD :

Pretty Hard Deal
Poor Hungry Desperate
Patience Harassment Donkey-work
Passed High-school with Difficulty
Permanent Head Damage
Possibly Hard to Describe
Potato Highly Defected
Paid HoliDays
Peacefully Hibernating Donkey
Perfect Husband Discovery
Person Hard to Describe
Professorship? hah! Dream on!
Please hire. Desperate.
Physiologically Deficient
Pour him (or her) a Drink
Philosophically Disturbed
Pathetically hopeless Dweeb
Probably heavily in Debt
Parents have Doubts
Professors had Doubts
Pheromone Deprived
Probably hard to Describe
Patiently headed Downhill…
Pulsating heaving Disaster?
Pretty homely Dork
Potential heavy Drinker