Folding a overpair on the river

[Eken]

I am trying to stop paying off when it seems obvious I am beaten. Should I call the last bet in these spots?

Hand 1:
SB is loose passive, BB is loose agg, no read on CO.

Party Poker 2/4 Hold'em (10 handed) converter

Preflop: Hero is UTG with K[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img]. CO posts a blind of $2.
<font color="#CC3333">Hero raises</font>, <font color="#666666">5 folds</font>, CO (poster) calls, <font color="#666666">1 fold</font>, SB calls, BB calls.

Flop: (8 SB) Q[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, BB checks, <font color="#CC3333">Hero bets</font>, CO folds, SB calls, BB calls.

Turn: (5.50 BB) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, BB checks, <font color="#CC3333">Hero bets</font>, SB calls, BB calls.

River: (8.50 BB) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">BB bets</font>, Hero calls, <font color="#CC3333">SB raises</font>, BB folds, Hero folds.

Final Pot: 12.50 BB


Hand 2:
Only played a few orbits at the table, but all opponents here seems to be pretty loose.

Party Poker 3/6 Hold'em (10 handed) converter

Preflop: Hero is MP2 with K[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">UTG raises</font>, UTG+1 calls, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">3 folds</font>, SB calls, <font color="#666666">1 fold</font>, <font color="#CC3333">UTG caps</font>, UTG+1 calls, Hero calls, SB calls.

Flop: (17 SB) 7[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">UTG bets</font>, UTG+1 calls, <font color="#CC3333">Hero raises</font>, SB calls, UTG calls, UTG+1 calls.

Turn: (12.50 BB) 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">UTG bets</font>, UTG+1 calls, Hero calls, SB calls.

River: (16.50 BB) 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">UTG bets</font>, <font color="#CC3333">UTG+1 raises</font>, Hero folds, SB folds, UTG calls.

Final Pot: 20.50 BB