Dig Deeper

Dogs with hypothyroidism can look sad because low thyroid hormone changes the structure of the skin and muscles in the face. The skin may become slightly thicker and heavier, the eyelids can droop mildly, and the cheeks may lose firmness, which together creates a softer, less alert expression. This is not an emotional change. It’s caused by slowed metabolism affecting connective tissue and muscle tone. If you’re concerned, look for this appearance alongside other signs like weight gain, low energy, or coat thinning. A simple blood test from a veterinarian can determine whether thyroid levels are abnormal.

Sennenhunde are a group of Swiss mountain dogs that include the Bernese Mountain Dog, Greater Swiss Mountain Dog, Appenzeller Sennenhund, and Entlebucher Mountain Dog. They were bred as working farm dogs in the Alpine regions of Switzerland, where they helped move cattle, pull carts, and remain present on rural properties. Although they share a recognizable tri-color pattern and sturdy build, each breed reflects a different working style shaped by regional needs. Over time, these closely related farm dogs were formally separated into distinct breeds, while still retaining their shared origin.

Healthy dog poop is typically well-formed, moist, and easy to pick up, with a consistent medium to dark brown color. It should hold its shape without being too hard or too soft, reflecting balanced digestion, proper hydration, and normal gut function. While size and slight variations can differ based on diet and the individual dog, stool that is predictable and structured is generally a sign that the digestive system is working as it should.

EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) come from fish or algae and are directly absorbed by dogs to support inflammation, cognition, and cellular health. ALA (alpha-linolenic acid), from seeds like flax or chia, is a plant-based omega-3 that dogs can convert into EPA or DHA, but not very efficiently. The main difference is that EPA and DHA are already in the form dogs need, while ALA plays a more limited role unless paired with other sources.

Eicosanoids are short-lived signaling molecules made from fats, especially omega-6 and omega-3 fatty acids. They help regulate inflammation, immune response, blood flow, pain, and healing. Unlike hormones that act throughout the body, eicosanoids are produced on demand and act locally, right where they’re made. The type of fat they come from affects their role—omega-6 fats usually lead to more inflammatory eicosanoids, while omega-3 fats like EPA tend to produce anti-inflammatory ones. This balance plays a key role in how the body responds to stress, injury, or infection.

Read about How much EPA and DHA Do Dogs Need?

No, turkey does not make dogs sleepy. People sometimes think it does because it contains tryptophan, an amino acid involved in producing serotonin and melatonin, which influence mood and sleep. In reality, turkey’s tryptophan levels are similar to other meats, and eating it as part of a normal meal is unlikely to produce noticeable calming effects.

Most types of resin are not safe for dogs to eat, especially raw tree resins or industrial varieties they might encounter in household products. However, there are exceptions: certain tree resins like Boswellia serrata (frankincense resin) are safe when included in supplements and have been studied for supporting joint health and reducing inflammation in dogs. In general, unless a resin is specifically prepared for pets, it should be avoided.

Boswellia is the tree, and frankincense is the resin it produces. Frankincense is harvested from Boswellia bark, then dried and processed; in supplements it often appears as Boswellia serrata extract, standardized for boswellic acids that support joint health and inflammation balance.

Probiotics are classified by species, subspecies, and strains. The species names the overall group, subspecies mark recognizable branches, and strains pinpoint one exact genetic line that scientists can study and manufacturers can use.

In supplements, “mushroom” means the fruiting body, the cap and stem you see, while “mycelium” is the hidden web the fungus grows with. They can come from the same species, but they aren’t interchangeable. Fruiting bodies are denser in cell walls and usually provide more beta-glucans (β-glucans) per gram. Mycelium’s makeup depends on how it’s grown: on wood (mostly fungal material), on grain (often milled with that grain, which adds regular starch), or in liquid culture (which can yield different polysaccharides). To compare products fairly, check which part was used, how it was grown, and whether the label lists a % of beta-glucans instead of only “total polysaccharides.”

When a dog vomits yellow liquid, it’s typically bile, a digestive fluid produced by the liver and stored in the gallbladder. This yellow substance can be vomited when a dog’s stomach is empty, mildly irritated, or reacting to something ingested like grass. While it can be harmless in isolated instances, repeated bile vomiting may indicate an underlying issue with digestion, inflammation, or gastrointestinal health.

Every dog already has a community of helpful bacteria and yeast living in the gut. Probiotics are supplements that add selected live, beneficial microbes to that community. Prebiotics are supplements made of specific fibers that those beneficial microbes use as food. They do different jobs and often work better together.

Dogs are not completely colorblind. Dogs can see color, but their range is limited to mostly blues and yellows because they have only two types of color-detecting cells. Colors like red, green, and orange appear duller or blend together, which is why their color vision seems more restricted than ours.

Sarcoptic mange usually causes severe itching and spreads easily through contact, so other dogs in the household may start scratching as well. Demodectic mange is not typically contagious and more often causes patchy hair loss with little itching at first. Because sarcoptic mange involves exposure to contagious mites and demodectic mange involves overgrowth of mites already in the skin, veterinarians use itch severity, distribution of hair loss, and skin testing to decide whether isolation and immediate treatment are needed.

Astaxanthin is a common ingredient in antioxidant supplements, including supplements for dogs. But before it ever appeared in capsules or chews, astaxanthin existed as part of a much older biological process. Certain algae produce astaxanthin as part of their normal life cycle, not for nutrition, but to survive challenging environmental conditions. Understanding why algae make astaxanthin helps explain where it comes from, how it moves through the food chain, and why it became so commercially important.