This is the code that you get for a Valenth:
[url=http://www.valenth.com/feed/67648][img]http://valenth.com/lab/67648.png[/img][br]Feed Me![/url][br][url=http://www.valenth.com]Adopted from Valenth[/url]

Looks like:
User Image - Blocked by "Display Image" Settings. Click to show.[br]Feed Me![br]Adopted from Valenth

Yuck. To fix it up so its just your Valenth, Select form the first [ /br ] to before the last [ /url ] and press the delete key. It should look like:
[url=http://www.valenth.com/feed/67648][img]http://valenth.com/lab/67648.png[/img][/url]

Looks like:
User Image - Blocked by "Display Image" Settings. Click to show.

To rig your pet for feeding only one type of food, Simply add /foodtype to the end of the first URL. No you don't type "foodtype", That should be whatever you want to feed your pet.

Types of food:
Good:
User Image - Blocked by "Display Image" Settings. Click to show. Dreamdust
User Image - Blocked by "Display Image" Settings. Click to show. Sundrop
User Image - Blocked by "Display Image" Settings. Click to show. Ambrosia+Nectar
User Image - Blocked by "Display Image" Settings. Click to show. Chimrean+Pear
User Image - Blocked by "Display Image" Settings. Click to show. Jelly+Syringe
User Image - Blocked by "Display Image" Settings. Click to show. Heartberry-Roasted+Venison

Neutral:
User Image - Blocked by "Display Image" Settings. Click to show. Balance+Elixir
User Image - Blocked by "Display Image" Settings. Click to show. Strawberry+Tart
User Image - Blocked by "Display Image" Settings. Click to show. Sparkling+Water
User Image - Blocked by "Display Image" Settings. Click to show. Faerwethr+Roast
User Image - Blocked by "Display Image" Settings. Click to show. Gummi+Prrb
User Image - Blocked by "Display Image" Settings. Click to show. Courting+Martini

Evil:
User Image - Blocked by "Display Image" Settings. Click to show. Stolen+Soul
User Image - Blocked by "Display Image" Settings. Click to show. Wyrm+Fruit
User Image - Blocked by "Display Image" Settings. Click to show. Tainted+Ichor
User Image - Blocked by "Display Image" Settings. Click to show. Stuffed+Sprite
User Image - Blocked by "Display Image" Settings. Click to show. Suspicious+Green+Treat
User Image - Blocked by "Display Image" Settings. Click to show. Buttercreme+Bar
User Image - Blocked by "Display Image" Settings. Click to show. Chocolate-Drenched+Dremish+Delight

Useing Dreamdust the code would look like:
[url=http://www.valenth.com/feed/67648/Dreamdust][img]http://valenth.com/lab/67648.png[/img][/url]

Looks like:
User Image - Blocked by "Display Image" Settings. Click to show.