Being Human in Chinese / Japanese...

人道 is literally the “The Way of Being Human,” or “The Human Way.” It can also be translated as “humanity.”

人道 has a secondary meaning of “sidewalk” as in “the way for people to walk” (in Japanese and Korean only). But as calligraphy artwork, nobody will read it with that translation.

Please note that there are two ways to Romanize Dao or Tao (Daoism = Taoism). It's the same word in Chinese.

佛は衆生の中に在り is “Butsu wa shujo no naka ni ari” and means that the Buddha (potential for Buddhahood) exists in all beings in the universe.

So yes, your dog has the potential to be a Buddha (but only in a future reincarnation as a human). But all things, from the tiny cricket to the humpback whale have Buddha nature within them. If one takes the time to look and contemplate, one will see the Buddha in all things.

In Japan, sometimes the Buddha character is written 仏 instead of 佛, so you might see the whole phrase written as 仏は衆生の中に在り.

Note: Because this selection contains some special Japanese Hiragana characters, it should be written by a Japanese calligrapher.

悉達多 is the name Siddhartha (as in Siddhartha Gautama), the personal name for Śākyamuni.

This same Buddha is also known as “Shakyamuni Gautama,” “Gotama Buddha,” or “Tathagata.”

Siddhartha Gautama was a spiritual teacher in the northern region of the Indian subcontinent who founded Buddhism. He is generally seen by Buddhists as the Supreme Buddha (Sammāsambuddha) of known human history.

The actual meaning of this name in Chinese is the realization of all aims, or simply being prosperous.

This name is sometimes romanized from the original Sanskrit or Pali as Siddhattha (from Siddhattha Gotama), Siddharth, Siddhārtha, or Sarvāthasiddha.

Siddhārtha or Sarvāthasiddha can also be written as 悉達, 悉多, 悉多頞他, or 悉陀.

天狗 is the Japanese title for Tengu, which roughly translates as “heavenly dog.”

Tengu is a type of legendary creature found in Japanese folk religion and is also considered a type of Shinto god (kami) or yōkai (supernatural being).

The origin is Chinese, though this term is seldom used in Chinese anymore. It was a dog-like Chinese demon (Tiangou)

Although the title contains the word “dog,” the tengu are often depicted with human and bird-like characteristics. Sometimes they have large noses or beaks like birds.

身土不二 (Shindofuni) is originally a Buddhist concept or proverb referring to the inseparability of body-mind and geographical circumstances.

This reads, “Body [and] earth [are] not two.”

Other translations or matching ideas include:
Body and land are one.
Body and earth can not be separated.
Body earth sensory curation.
You are what you eat.
Indivisibility of the body and the land (because the body is made from food and food is made from the land).

Going further, this speaks of our human bodies and the land from which we get our food being closely connected. This phrase is often used when talking about natural and organic vegetables coming directly from the farm to provide the healthiest foods in Japan.

Character notes: 身(shin) in this context does not just mean your physical body but a concept including both body and mind.
土 (do) refers to the soil, earth, clay, land, or in some cases, locality. It's not the proper name of Earth, the planet. However, it can refer to the land or realm we live in.

Japanese note: This has been used in Japan, on and off, since 1907 as a slogan for a governmental healthy eating campaign (usually pronounced as shindofuji instead of the original shindofuni in this context). It may have been hijacked from Buddhism for this propaganda purpose, but at least this is “healthy propaganda.”

Korean note: The phrase 身土不二 was in use by 1610 A.D. in Korea, where it can be found in an early medical journal.
In modern South Korea, it's written in Hangul as 신토불이. Korea used Chinese characters (same source as Japanese Kanji) as their only written standard form of the language until about a hundred years ago. Therefore, many Koreans will recognize this as a native phrase and concept.

See Also:  Strength and Love in Unity