Hi Francisco and welcome to the Forum
If you look at the Board Index you will find plenty of topics about puppy buying and welfare which are useful whatever breed or mixed breed dog you are adopting. The Puppy care section should be a good place to start.
Health, temperament, behaviour etc. however which is specific to the schnauzer breed may not be helpful with a mixed breed puppy which will have characteristics from different genes. Dachshunds are hounds which could mean the dogs will have a strong prey drive and may be great diggers as the breed were originally bred to dig out badgers to be killed
Health concerns specific to dachshunds are listed here (from a UK website Pets4Homes):
"
Dachshund Health
One of the most concerning health issues seen in Dachshunds of all varieties is Intervertebral Disc Disease (IVDD) which affects their spines and this is related to the dwarfism gene which causes their short legs. As a result, the breed is known to be at a higher risk of spinal injuries than some other breeds. IVDD X-ray screening is now available for breeding dogs to help reduce the inherited risk. It is also essential that care be taken when sharing a home with a Dachshund puppy. Jumping up on furniture or running up and down stairs can cause damage to a growing Dachshund's spine so must be avoided at all costs. Other health issues that affect the breed include the following:
Intervertebral Disc Disease (IVDD) - test available
Progressive Retinal Atrophy (NPHP4) - test available (note, different form of PRA from that in miniatures)
Patellar luxation
Epilepsy
Thyroid problems
Cushing’s syndrome
Allergies/skin issues
Obesity"
There is plenty of information regarding miniature schnauzer health on the Forum under the headings in the Board Index but the main concerns are that breeding dogs are tested for:
Hereditary Cataracts (HC) Progressive Retinal Atrophy (PRA) and puppies eyes are screened for Congenital Hereditary Cataracts (CHC)
Breeding dogs should also have a DNA Screening for Mycobacterium Avium Complex (MAC).
Although you are looking at a litter of puppies bred by an accidental mating of a miniature schnauzer and a mixed breed dog, it is still important to be aware of health issues that affect the purebred dogs that are in the breeding line as some of these conditions can be very costly in veterinary fees if a dog is affected. Just because a dog has a mixed breed parentage it does not mean it is healthier than a well bred pedigree dog from healthy lines.
A puppy will inherit 50% of its genes from the mother and 50% from the father but, even between siblings in the same litter, it is impossible to predict which genes will be passed to any one puppy. Just looking at puppies really tells very little about which genetic characteristics they will have inherited from each parent. As mentioned above, certain health issues are definitely linked to long body / short legged type dogs such as the dachshund so looking for a more compact puppy in the litter would be best, if you do decide to take one of these.
Anyway, do have a browse of the puppy care section on the Forum for general advice on puppy welfare and, if you have any general puppy care questions that are not covered there, do ask. There are plenty of members who can help with advice on raising a puppy
