River raise with bottom full house?

[centja1]

Villain in this hand is 28/7.5/1.75 over 70 hands. For this session (about 35 hands in) I perceived him as a little loose pre-flop but nothing more nor less than solid post-flop.

I've been reading SSHE and particularly working on not freezing up on the river when i should bet or raise for value. 100% of the time, I'm betting the river if checked to, but I'm wondering about the viability of a raise on the end. He obviously won't fold a better hand, but will he have a worse hand often enough to raise?

Thanks for the help.

Absolute Poker 2/4 Hold'em (8 handed) converter

Preflop: Hero is CO with 5[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, MP1 calls, MP2 calls, Hero calls, <font color="#666666">1 fold</font>, SB completes, BB checks.

Flop: (6 SB) 8[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(6 players)</font>
SB checks, BB checks, UTG+1 checks, MP1 checks, <font color="#CC3333">MP2 bets</font>, <font color="#CC3333">Hero raises</font>, SB calls, BB folds, UTG+1 folds, MP1 folds, MP2 calls.

Turn: (6 BB) 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">MP2 bets</font>, <font color="#CC3333">Hero raises</font>, SB folds, <font color="#CC3333">MP2 3-bets</font>, Hero calls.

River: (13 BB) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP2 bets</font>, <font color="#CC3333">Hero ???</font>

Final Pot: 18 BB