Page |1
LABORATORY ANIMAL SCIENCE (LAS) FINAL EXAM
VERSION 1 NEWEST 2025/2026 NEWEST ACTUAL EXAM
WITH COMPLETE QUESTIONS AND VERIFIED ANSWERS
|ALREADY GRADED A+|
What are the reasons medications are delivered by gavaging? -
ANSWER-We deliver medication, food or fluids via gavage when
an animal is not eating due to illness or trauma. We also deliver
testing material via gavage in the laboratory setting; specifically to
rats because they cannot vomit.
What are some problems that can occur when oral gavage is
administered improperly? - ANSWER-If there is too much force
exerted when completing a gavage the esophagus can be
punctured or the needle can be accidentally placed in the trachea.
If the liquid is delivered prior to being fully placed, the animal can
aspirate the fluid.
You are breeding a Brother-Sister mating of 2 B6D2F2 mice. The
male is brown and the female is tan.
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What are the correct Genotype possibilities, (future offspring) for
these two mice? - ANSWER-Male's genotype(s): bbDd, bbDD
Female's genotype(s): bbdd
How do we sex guinea pigs? - ANSWER-By examining the
genitalia
Guinea Pig Scientific Name - ANSWER-Cavia Porcellus
Guinea Pig Dental Formula - ANSWER-2(I1/1, C0/0, P1/1, M3/3)
What teeth in the guinea pig are open rooted? - ANSWER-All of
the teeth
What type of ovulator is the guinea pig? - ANSWER-Spontaneous
Is the guinea pig covered by the AWA? - ANSWER-No
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What are some uses in research of guinea pigs? - ANSWER-
Cancer
Toxicities
Behavior
Dematologcal
pharmaceuticals
What is pregnancy toxemia? How can it be treated? - ANSWER-
Pregnancy toxemia is a condition when the mother is in an
negative energy balance due to the pups developing. The mother
is not getting enough energy through food and metabolism to
keep up. We treat this with glucose/nutrition supplementation.
How do we sex mice? - ANSWER-By the anogenital distance,
males are 1 ½ X longer than that of females
Guinea Pig IM injection - ANSWER-Restrain the animal
appropriately. Place thumb of non-dominant hand on the
vertebrae and index finger just behind the most caudal rib. Find
the epaxial muscle and lift it against your thumb. With dominant
LABORATORY ANIMAL SCIENCE (LAS) FINAL EXAM
VERSION 1 NEWEST 2025/2026 NEWEST ACTUAL EXAM
WITH COMPLETE QUESTIONS AND VERIFIED ANSWERS
|ALREADY GRADED A+|
What are the reasons medications are delivered by gavaging? -
ANSWER-We deliver medication, food or fluids via gavage when
an animal is not eating due to illness or trauma. We also deliver
testing material via gavage in the laboratory setting; specifically to
rats because they cannot vomit.
What are some problems that can occur when oral gavage is
administered improperly? - ANSWER-If there is too much force
exerted when completing a gavage the esophagus can be
punctured or the needle can be accidentally placed in the trachea.
If the liquid is delivered prior to being fully placed, the animal can
aspirate the fluid.
You are breeding a Brother-Sister mating of 2 B6D2F2 mice. The
male is brown and the female is tan.
, Page |2
What are the correct Genotype possibilities, (future offspring) for
these two mice? - ANSWER-Male's genotype(s): bbDd, bbDD
Female's genotype(s): bbdd
How do we sex guinea pigs? - ANSWER-By examining the
genitalia
Guinea Pig Scientific Name - ANSWER-Cavia Porcellus
Guinea Pig Dental Formula - ANSWER-2(I1/1, C0/0, P1/1, M3/3)
What teeth in the guinea pig are open rooted? - ANSWER-All of
the teeth
What type of ovulator is the guinea pig? - ANSWER-Spontaneous
Is the guinea pig covered by the AWA? - ANSWER-No
, Page |3
What are some uses in research of guinea pigs? - ANSWER-
Cancer
Toxicities
Behavior
Dematologcal
pharmaceuticals
What is pregnancy toxemia? How can it be treated? - ANSWER-
Pregnancy toxemia is a condition when the mother is in an
negative energy balance due to the pups developing. The mother
is not getting enough energy through food and metabolism to
keep up. We treat this with glucose/nutrition supplementation.
How do we sex mice? - ANSWER-By the anogenital distance,
males are 1 ½ X longer than that of females
Guinea Pig IM injection - ANSWER-Restrain the animal
appropriately. Place thumb of non-dominant hand on the
vertebrae and index finger just behind the most caudal rib. Find
the epaxial muscle and lift it against your thumb. With dominant
