Spots problem in Petz Workshop
When adding spots in petz workshop, either your game crashes or they don't show up.
This is because you have a non-english computer and therefor it uses a "," instead of "."
For fixing it follow the steps below:

Texturing spots in Petz Workshop and adding furfiles (with the help of LNZ Pro)
Spots
50, 37, -0.110298, 0.7710831, -0.6271086, 15, -1, 3, -1, -1, -1
Here's an example of a spot added with Pet Workshop.
First add the spots the way you want with Pet Workshop and then save the breedfile,
open it up in LNZ Pro and change the last -1 to the number of your texture
(this is usually 0 or 1). Save the breedfile and open Petz and there's your petz with
textured spots. For a nice look you could also add an extra 0 after the last number that
way your spots stay in their place when the petz move.
Furfiles
First open LNZ Pro and add the furfile(s) to the breedfile's texture list:
\resource\dogz\PDHrmerlespot.bmp 0 (this is just an example, this is different
for every furfile)And save, open the breedfile in Pet Workshop and now you can use the
texture option for adding texture to any part you want. Don't add a texture from the menu
in Pet Workshop, because it'll make the furfile internal and when you delete your breedfile,
your petz will have no texture. If you want to add a furfile to a spot,
you must first add the furfile through LNZ Pro, then add your spots and then add texture to
the spots through LNZ Pro (the numbers will be different for those)
\art\textures\hair6.bmp 1
\art\textures\hair10.bmp 1
\art\textures\hair6.bmp 1
\resource\dogz\PDHrmerle.bmp 0
\art\textures\hair10.bmp 1
\resource\dogz\PDHrmerlespot.bmp 0
For example in this breedfile, the number for the last furfile is 4, so you need to replace the -1 with 4.

When breeding petz from your hexed breedfile, the pups are all white
This is because you have deleted the Fur Color Area. Open up the dalmatian breedfile
and past this part right after the last ballz in your breedfile:
[Fur Color Areas]
;(1-4, 5 - jowls)
;FurColorTrait ballWithBaseColor colorAreas
1 48 0, 1, 2, 3, 4

Some second gens have coloured eyeballs instead of the white
Delete everything in the Fur Markings.

Hexing no-grows
Ever wanted a dogz or catz that stay a puppy forever, well now you can :)
Open up the breedfile in LNZ Pro. Copy everything except for Default Linez Part (PUP)
and replace this info in the adult file:
[Default Scales]
145 normal pet scale
145 normal ball scale
[Leg Extension]
24
24
[Body Extension]
30
[Face Extension]
-15
[Ear Extension]
100
[Head Enlargement]
103
4
[Feet Enlargement]
115
6
Save and now you have a no-grow :)