From Bandipedia, the Crash Bandicoot wiki
The Hog rams into a spike pillar
Whole Hog is the 2nd and last
hog riding level its also one of the levels that needs a
key. The key for this is in
Cortex's bonus round in
Sunset Vista. Whole Hog is nearly identical to
Hog Wild. The only major differences are that jumps are longer then before and spike pillars cause more of a promlem.